Commit graph

2865 commits

Author SHA1 Message Date
Linus Torvalds
2f9e825d3e Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block: (149 commits)
  block: make sure that REQ_* types are seen even with CONFIG_BLOCK=n
  xen-blkfront: fix missing out label
  blkdev: fix blkdev_issue_zeroout return value
  block: update request stacking methods to support discards
  block: fix missing export of blk_types.h
  writeback: fix bad _bh spinlock nesting
  drbd: revert "delay probes", feature is being re-implemented differently
  drbd: Initialize all members of sync_conf to their defaults [Bugz 315]
  drbd: Disable delay probes for the upcomming release
  writeback: cleanup bdi_register
  writeback: add new tracepoints
  writeback: remove unnecessary init_timer call
  writeback: optimize periodic bdi thread wakeups
  writeback: prevent unnecessary bdi threads wakeups
  writeback: move bdi threads exiting logic to the forker thread
  writeback: restructure bdi forker loop a little
  writeback: move last_active to bdi
  writeback: do not remove bdi from bdi_list
  writeback: simplify bdi code a little
  writeback: do not lose wake-ups in bdi threads
  ...

Fixed up pretty trivial conflicts in drivers/block/virtio_blk.c and
drivers/scsi/scsi_error.c as per Jens.
2010-08-10 15:22:42 -07:00
Atsushi Nemoto
cd078af65d tx493xide: use min_t() macro instead of min()
This fixes a warning ("comparison of distinct pointer types lacks a
cast") introduced by the commit
040f6b4f14 ("tx493xide: use ->pio_mode
value to determine pair device speed").

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-09 03:17:55 -07:00
Julia Lawall
7d543d8468 drivers/ide: Use memdup_user
Use memdup_user when user data is immediately copied into the
allocated region.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
position p;
identifier l1,l2;
@@

-  to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+  to = memdup_user(from,size);
   if (
-      to==NULL
+      IS_ERR(to)
                 || ...) {
   <+... when != goto l1;
-  -ENOMEM
+  PTR_ERR(to)
   ...+>
   }
-  if (copy_from_user(to, from, size) != 0) {
-    <+... when != goto l2;
-    -EFAULT
-    ...+>
-  }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-09 03:17:53 -07:00
Yann Dirson
2a800b7bd9 via82cxxx: fix typo for VT6415 PCIE PATA IDE Host Controller support.
Without this fix, init of the via82cxxx driver causes a oops with a
stack resembling the one below, and the boot blocks between init of
USB devices and launch of init (was easy to bisect by booting with
init=/bin/sh).

 Pid: 279, comm: work_for_cpu Not tainted 2.6.34.1-00003-ga42ea77 #2
 Call Trace:
  [<ffffffff81045691>] ? warn_slowpath_common+0x76/0x8c
  [<ffffffff810456f9>] ? warn_slowpath_fmt+0x40/0x45
  [<ffffffff812eb5a1>] ? printk+0x40/0x47
  [<ffffffff8108e1fd>] ? enable_irq+0x3e/0x64
  [<ffffffffa0003900>] ? ide_probe_port+0x55c/0x589 [ide_core]
  [<ffffffffa0003f22>] ? ide_host_register+0x273/0x628 [ide_core]
  [<ffffffffa00083e3>] ? ide_pci_init_two+0x4da/0x5c5 [ide_core]
  [<ffffffff8106117e>] ? up+0xe/0x36
  [<ffffffff81045d7e>] ? release_console_sem+0x17e/0x1ae
  [<ffffffff812d945b>] ? klist_iter_exit+0x14/0x1e
  [<ffffffff8120ed23>] ? bus_find_device+0x75/0x83
  [<ffffffffa0022832>] ? via_init_one+0x269/0x28a [via82cxxx]
  [<ffffffffa00223a2>] ? init_chipset_via82cxxx+0x0/0x1ea [via82cxxx]
  [<ffffffff81059f25>] ? do_work_for_cpu+0x0/0x1b
  [<ffffffff81190c65>] ? local_pci_probe+0x12/0x16
  [<ffffffff81059f30>] ? do_work_for_cpu+0xb/0x1b
  [<ffffffff8105d0dd>] ? kthread+0x75/0x7d
  [<ffffffff810097e4>] ? kernel_thread_helper+0x4/0x10
  [<ffffffff8105d068>] ? kthread+0x0/0x7d
  [<ffffffff810097e0>] ? kernel_thread_helper+0x0/0x10
 ---[ end trace 89c8cb70379b5bda ]---

The typo was introduced in a354ae8747,
and affects 2.6.33-rc4 and later.

Signed-off-by: Yann Dirson <ydirson@altern.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-09 03:17:51 -07:00
Borislav Petkov
1107128283 ide-cd: Do not access completed requests in the irq handler
ide_cd_error_cmd() can complete an erroneous request with leftover
buffers. Signal this with its return value so that the request is not
accessed after its completion in the irq handler and we oops.

Cc: <stable@kernel.org> # 32.x 33.x 34.x
Signed-off-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-09 03:17:49 -07:00
Arnd Bergmann
6e9624b8ca block: push down BKL into .open and .release
The open and release block_device_operations are currently
called with the BKL held. In order to change that, we must
first make sure that all drivers that currently rely
on this have no regressions.

This blindly pushes the BKL into all .open and .release
operations for all block drivers to prepare for the
next step. The drivers can subsequently replace the BKL
with their own locks or remove it completely when it can
be shown that it is not needed.

The functions blkdev_get and blkdev_put are the only
remaining users of the big kernel lock in the block
layer, besides a few uses in the ioctl code, none
of which need to serialize with blkdev_{get,put}.

Most of these two functions is also under the protection
of bdev->bd_mutex, including the actual calls to
->open and ->release, and the common code does not
access any global data structures that need the BKL.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07 18:25:34 +02:00
Arnd Bergmann
8a6cfeb6de block: push down BKL into .locked_ioctl
As a preparation for the removal of the big kernel
lock in the block layer, this removes the BKL
from the common ioctl handling code, moving it
into every single driver still using it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07 18:25:00 +02:00
FUJITA Tomonori
00fff26539 block: remove q->prepare_flush_fn completely
This removes q->prepare_flush_fn completely (changes the
blk_queue_ordered API).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07 18:24:15 +02:00
FUJITA Tomonori
afc2306810 ide: stop using q->prepare_flush_fn
use REQ_FLUSH flag instead.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07 18:24:15 +02:00
Christoph Hellwig
4c4762d10f block: fix some more cmd_type cleanup fallout
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07 18:22:29 +02:00
Christoph Hellwig
7b6d91daee block: unify flags for struct bio and struct request
Remove the current bio flags and reuse the request flags for the bio, too.
This allows to more easily trace the type of I/O from the filesystem
down to the block driver.  There were two flags in the bio that were
missing in the requests:  BIO_RW_UNPLUG and BIO_RW_AHEAD.  Also I've
renamed two request flags that had a superflous RW in them.

Note that the flags are in bio.h despite having the REQ_ name - as
blkdev.h includes bio.h that is the only way to go for now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07 18:20:39 +02:00
Christoph Hellwig
33659ebbae block: remove wrappers for request type/flags
Remove all the trivial wrappers for the cmd_type and cmd_flags fields in
struct requests.  This allows much easier grepping for different request
types instead of unwinding through macros.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07 18:17:56 +02:00
Linus Torvalds
1685e633b3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
  pcmcia: avoid buffer overflow in pcmcia_setup_isa_irq
  pcmcia: do not request windows if you don't need to
  pcmcia: insert PCMCIA device resources into resource tree
  pcmcia: export resource information to sysfs
  pcmcia: use struct resource for PCMCIA devices, part 2
  pcmcia: remove memreq_t
  pcmcia: move local definitions out of include/pcmcia/cs.h
  pcmcia: do not use io_req_t when calling pcmcia_request_io()
  pcmcia: do not use io_req_t after call to pcmcia_request_io()
  pcmcia: use struct resource for PCMCIA devices
  pcmcia: clean up cs.h
  pcmcia: use pcmica_{read,write}_config_byte
  pcmcia: remove cs_types.h
  pcmcia: remove unused flag, simplify headers
  pcmcia: remove obsolete CS_EVENT_ definitions
  pcmcia: split up central event handler
  pcmcia: simplify event callback
  pcmcia: remove obsolete ioctl

Conflicts in:
 - drivers/staging/comedi/drivers/*
 - drivers/staging/wlags49_h2/wl_cs.c
due to dev_info_t and whitespace changes
2010-08-06 12:25:06 -07:00
Dominik Brodowski
90abdc3b97 pcmcia: do not use io_req_t when calling pcmcia_request_io()
Instead of io_req_t, drivers are now requested to fill out
struct pcmcia_device *p_dev->resource[0,1] for up to two ioport
ranges. After a call to pcmcia_request_io(), the ports found there
are reserved, after calling pcmcia_request_configuration(), they may
be used.

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-ide@vger.kernel.org
CC: linux-usb@vger.kernel.org
CC: laforge@gnumonks.org
CC: linux-mtd@lists.infradead.org
CC: alsa-devel@alsa-project.org
CC: linux-serial@vger.kernel.org
CC: Michael Buesch <mb@bu3sch.de>
Acked-by: Marcel Holtmann <marcel@holtmann.org> (for drivers/bluetooth/)
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2010-08-03 09:04:11 +02:00
Dominik Brodowski
9a017a9103 pcmcia: do not use io_req_t after call to pcmcia_request_io()
After pcmcia_request_io(), do not make use of the values stored in
io_req_t, but instead use those found in struct pcmcia_device->resource[].

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-ide@vger.kernel.org
CC: linux-usb@vger.kernel.org
CC: laforge@gnumonks.org
CC: linux-mtd@lists.infradead.org
CC: alsa-devel@alsa-project.org
CC: linux-serial@vger.kernel.org
Acked-by: Marcel Holtmann <marcel@holtmann.org> (for drivers/bluetooth/)
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2010-08-03 09:03:59 +02:00
Dominik Brodowski
ac8b422838 pcmcia: remove cs_types.h
Remove cs_types.h which is no longer needed: Most definitions aren't
used at all, a few can be made away with, and two remaining definitions
(typedefs, unfortunatley) may be moved to more specific places.

CC: linux-ide@vger.kernel.org
CC: linux-usb@vger.kernel.org
CC: laforge@gnumonks.org
CC: linux-mtd@lists.infradead.org
CC: alsa-devel@alsa-project.org
CC: linux-serial@vger.kernel.org
Acked-by: Marcel Holtmann <marcel@holtmann.org> (for drivers/bluetooth/)
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2010-07-30 21:07:39 +02:00
Jiri Kosina
f1bbbb6912 Merge branch 'master' into for-next 2010-06-16 18:08:13 +02:00
Uwe Kleine-König
421f91d21a fix typos concerning "initiali[zs]e"
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-06-16 18:05:05 +02:00
Benjamin Herrenschmidt
c2cdf6aba0 powerpc/macio: Fix probing of macio devices by using the right of match table
Grant patches added an of mach table to struct device_driver. However,
while he changed the macio device code to use that, he left the match
table pointer in struct macio_driver and didn't update drivers to use
the "new" one, thus breaking the probing.

This completes the change by moving all drivers to setup the "new"
one, removing all traces of the old one, and while at it (since it
changes the exact same locations), I also remove two other duplicates
from struct driver which are the name and owner fields.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-06-02 17:50:38 +10:00
Geert Uytterhoeven
9aed230265 m68k: amiga - Amiga Gayle IDE platform device conversion
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-26 19:51:09 +02:00
Linus Torvalds
7e125f7b9c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:
  cmd640: fix kernel oops in test_irq() method
  pdc202xx_old: ignore "FIFO empty" bit in test_irq() method
  pdc202xx_old: wire test_irq() method for PDC2026x
  IDE: pass IRQ flags to the IDE core
  ide: fix comment typo in ide.h
2010-05-24 08:05:29 -07:00
Grant Likely
cf9b59e9d3 Merge remote branch 'origin' into secretlab/next-devicetree
Merging in current state of Linus' tree to deal with merge conflicts and
build failures in vio.c after merge.

Conflicts:
	drivers/i2c/busses/i2c-cpm.c
	drivers/i2c/busses/i2c-mpc.c
	drivers/net/gianfar.c

Also fixed up one line in arch/powerpc/kernel/vio.c to use the
correct node pointer.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-05-22 00:36:56 -06:00
Jens Axboe
ee9a3607fb Merge branch 'master' into for-2.6.35
Conflicts:
	fs/ext3/fsync.c

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-21 21:27:26 +02:00
Tejun Heo
c3e33e043f block,ide: simplify bdops->set_capacity() to ->unlock_native_capacity()
bdops->set_capacity() is unnecessarily generic.  All that's required
is a simple one way notification to lower level driver telling it to
try to unlock native capacity.  There's no reason to pass in target
capacity or return the new capacity.  The former is always the
inherent native capacity and the latter can be handled via the usual
device resize / revalidation path.  In fact, the current API is always
used that way.

Replace ->set_capacity() with ->unlock_native_capacity() which take
only @disk and doesn't return anything.  IDE which is the only current
user of the API is converted accordingly.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-21 20:01:02 +02:00
Grant Likely
61c7a080a5 of: Always use 'struct device.of_node' to get device node pointer.
The following structure elements duplicate the information in
'struct device.of_node' and so are being eliminated.  This patch
makes all readers of these elements use device.of_node instead.

(struct of_device *)->node
(struct dev_archdata *)->prom_node (sparc)
(struct dev_archdata *)->of_node (powerpc & microblaze)

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-05-18 16:10:44 -06:00
Sergei Shtylyov
a9ddabc52c cmd640: fix kernel oops in test_irq() method
When implementing the test_iqr() method, I forgot that this driver is not an
ordinary PCI driver and also needs to support VLB variant of the chip. Moreover,
'hwif->dev' should be NULL, potentially causing oops in pci_read_config_byte().

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-11 00:08:03 -07:00
Dominik Brodowski
ded6a1a341 pcmcia: dev_node removal (drivers with updated printk call)
As a second step, remove any usage of dev_node_t from drivers which
only wrote to this typedef/struct, except one printk() which can
easily be replaced by a dev_info()/dev_warn() call.

CC: Harald Welte <laforge@gnumonks.org>
CC: linux-ide@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: netdev@vger.kernel.org
CC: linux-usb@vger.kernel.org
Acked-by: Karsten Keil  <isdn@linux-pingi.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2010-05-10 10:23:15 +02:00
Dominik Brodowski
eb14120f74 pcmcia: re-work pcmcia_request_irq()
Instead of the old pcmcia_request_irq() interface, drivers may now
choose between:

- calling request_irq/free_irq directly. Use the IRQ from *p_dev->irq.

- use pcmcia_request_irq(p_dev, handler_t); the PCMCIA core will
  clean up automatically on calls to pcmcia_disable_device() or
  device ejection.

- drivers still not capable of IRQF_SHARED (or not telling us so) may
  use the deprecated pcmcia_request_exclusive_irq() for the time
  being; they might receive a shared IRQ nonetheless.

CC: linux-bluetooth@vger.kernel.org
CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-serial@vger.kernel.org
CC: alsa-devel@alsa-project.org
CC: linux-usb@vger.kernel.org
CC: linux-ide@vger.kernel.org
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2010-05-10 10:23:13 +02:00
Kristoffer Ericson
85ea2d3f9e pata_pcmcia / ide-cs: Fix bad hashes for Transcend and kingston IDs
This patch fixes the bad hashes for one Kingston and one Transcend card.
Thanks to komuro for pointing this out.

Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-05-05 14:48:48 -04:00
Sergei Shtylyov
f693be4d8a pdc202xx_old: ignore "FIFO empty" bit in test_irq() method
The driver takes into account not only the interrupt status bit but
also "FIFO empty" bit in its test_irq() method. This actually is a
superfluous check since for the DMA commands calling the
dma_test_irq() method further in the interrupt handler makes sure FIFO
is emptied.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-22 19:11:24 -07:00
Sergei Shtylyov
63e7cf9105 pdc202xx_old: wire test_irq() method for PDC2026x
In the commit e0321fbe6d (pdc202xx_old:
implement test_irq() method (take 2)) I forgot to modify
'pdc2026x_port_ops'... :-/

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-22 19:11:24 -07:00
Kristoffer Ericson
f25798eda6 pata_pcmcia/ide-cs: add IDs for transcend and kingston cards
This patch adds idstrings for Kingston 1GB/4GB and Transcend 4GB/8GB.

Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-04-22 21:51:12 -04:00
Yegor Yefremov
ec1a123afd IDE: pass IRQ flags to the IDE core
This enables shared IRQs and other features to be used with platform devices

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-15 14:20:53 -07:00
Linus Torvalds
cf90bfe2eb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:
  ide: Fix IDE taskfile with cfq scheduler
  ide: Must hold queue lock when requeueing
  ide: Requeue request after DMA timeout
2010-04-08 07:45:36 -07:00
Mikulas Patocka
720fc22a7a ide: Fix IDE taskfile with cfq scheduler
When ide taskfile access is being used (for example with hdparm --security
commands) and cfq scheduler is selected, the scheduler crashes on BUG in
cfq_put_request.

The reason is that the cfq scheduler is tracking counts of read and write
requests separately; the ide-taskfile subsystem allocates a read request and
then flips the flag to make it a write request. The counters in cfq will
mismatch.

This patch changes ide-taskfile to allocate the READ or WRITE request as
required and don't change the flag later.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-06 16:43:33 -07:00
Herbert Xu
1af1850346 ide: Must hold queue lock when requeueing
ide-atapi requeues requests without holding the queue lock.
This patch fixes it by using ide_requeue_and_plug.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-01 01:31:14 -07:00
Herbert Xu
6072f7491f ide: Requeue request after DMA timeout
I noticed that my KVM virtual machines were experiencing IDE
issues resulting in processes stuck on waiting for buffers to
complete.

The root cause is of course race conditions in the ancient qemu
backend that I'm using.  However, the fact that the guest isn't
recovering is a bug.

I've tracked it down to the change made last year to dequeue
requests at the start rather than at the end in the IDE layer.

commit 8f6205cd57
Author: Tejun Heo <tj@kernel.org>
Date:   Fri May 8 11:53:59 2009 +0900

    ide: dequeue in-flight request

The problem is that the function ide_dma_timeout_retry does not
requeue the current request, causing one request to be lost for
each DMA timeout.

This patch fixes this by requeueing the request.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-01 01:31:13 -07:00
Tejun Heo
5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
David S. Miller
9ce41aed0d Revert "ide: skip probe if there are no devices on the port (v2)"
This reverts commit a20b2a44ec.

As requested by David Fries.  This makes CDROMs which are slave drives
on a ribbon without a master disappear and causes other similar kinds
of badness.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-28 18:58:28 -07:00
David S. Miller
e4afb29fa3 Revert "via82cxxx: workaround h/w bugs"
This reverts commit f931a5d578.

It causes regressions for some users.

Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-27 07:55:58 -07:00
Linus Torvalds
4c10c937cc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-next-2.6: (49 commits)
  drivers/ide: Fix continuation line formats
  ide: fixed section mismatch warning in cmd640.c
  ide: ide_timing_compute() fixup
  ide: make ide_get_best_pio_mode() static
  via82cxxx: use ->pio_mode value to determine pair device speed
  tx493xide: use ->pio_mode value to determine pair device speed
  siimage: use ->pio_mode value to determine pair device speed
  palm_bk3710: use ->pio_mode value to determine pair device speed
  it821x: use ->pio_mode value to determine pair device speed
  cs5536: use ->pio_mode value to determine pair device speed
  cs5535: use ->pio_mode value to determine pair device speed
  cmd64x: fix handling of address setup timings
  amd74xx: use ->pio_mode value to determine pair device speed
  alim15x3: fix handling of UDMA enable bit
  alim15x3: fix handling of DMA timings
  alim15x3: fix handling of command timings
  alim15x3: fix handling of address setup timings
  ide-timings: use ->pio_mode value to determine fastest PIO speed
  ide: change ->set_dma_mode method parameters
  ide: change ->set_pio_mode method parameters
  ...
2010-03-04 08:24:06 -08:00
David S. Miller
950f564b70 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/ide-2.6 2010-03-02 23:57:59 -08:00
Linus Torvalds
bc53515413 Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  ACPI: replace acpi_integer by u64
  ACPICA: Update version to 20100121.
  ACPICA: Remove unused uint32_struct type
  ACPICA: Disassembler: Remove obsolete "Integer64" field in parse object
  ACPICA: Remove obsolete ACPI_INTEGER (acpi_integer) type
  ACPICA: Predefined name repair: fix NULL package elements
  ACPICA: AcpiGetDevices: Eliminate unnecessary _STA calls
  ACPICA: Update all ACPICA copyrights and signons to 2010
  ACPICA: Update for new gcc-4 warning options
2010-03-01 10:36:22 -08:00
Linus Torvalds
b1bf936840 Merge branch 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block: (38 commits)
  block: don't access jiffies when initialising io_context
  cfq: remove 8 bytes of padding from cfq_rb_root on 64 bit builds
  block: fix for "Consolidate phys_segment and hw_segment limits"
  cfq-iosched: quantum check tweak
  blktrace: perform cleanup after setup error
  blkdev: fix merge_bvec_fn return value checks
  cfq-iosched: requests "in flight" vs "in driver" clarification
  cciss: Fix problem with scatter gather elements in the scsi half of the driver
  cciss: eliminate unnecessary pointer use in cciss scsi code
  cciss: do not use void pointer for scsi hba data
  cciss: factor out scatter gather chain block mapping code
  cciss: fix scatter gather chain block dma direction kludge
  cciss: simplify scatter gather code
  cciss: factor out scatter gather chain block allocation and freeing
  cciss: detect bad alignment of scsi commands at build time
  cciss: clarify command list padding calculation
  cfq-iosched: rethink seeky detection for SSDs
  cfq-iosched: rework seeky detection
  block: remove padding from io_context on 64bit builds
  block: Consolidate phys_segment and hw_segment limits
  ...
2010-03-01 09:00:29 -08:00
Manuel Lauss
963accbc82 MIPS: Alchemy: change dbdma to accept physical memory addresses
DMA can only be done from physical addresses; move the "virt_to_phys"
source/destination buffer address translation from the dbdma queueing
functions (since the hardware can only DMA to/from physical addresses)
to their respective users.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27 12:52:55 +01:00
Manuel Lauss
ea071cc705 MIPS: Alchemy: remove dbdma compat macros
Remove dbdma compat macros, move remaining users over to default
queueing functions and -flags.

(Queueing function signature has changed in order to give
 a build failure instead of silent functional changes due
 to the no longer implicitly specified DDMA_FLAGS_IE flag)

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-27 12:52:54 +01:00
Martin K. Petersen
8a78362c4e block: Consolidate phys_segment and hw_segment limits
Except for SCSI no device drivers distinguish between physical and
hardware segment limits.  Consolidate the two into a single segment
limit.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-02-26 13:58:08 +01:00
Martin K. Petersen
086fa5ff08 block: Rename blk_queue_max_sectors to blk_queue_max_hw_sectors
The block layer calling convention is blk_queue_<limit name>.
blk_queue_max_sectors predates this practice, leading to some confusion.
Rename the function to appropriately reflect that its intended use is to
set max_hw_sectors.

Also introduce a temporary wrapper for backwards compability.  This can
be removed after the merge window is closed.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-02-26 13:58:08 +01:00
Joe Perches
b1681c56f5 drivers/ide: Fix continuation line formats
String constants that are continued on subsequent lines with \
are not good.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 18:44:44 -08:00
Chris Frey
8495fb1b8d ide: fixed section mismatch warning in cmd640.c
Signed-off-by: Chris Frey <cdfrey@foursquare.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-28 06:04:50 -08:00
Lin Ming
439913fffd ACPI: replace acpi_integer by u64
acpi_integer is now obsolete and removed from the ACPICA code base,
replaced by u64.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-01-28 01:47:33 -05:00
Bartlomiej Zolnierkiewicz
3dabcfef3e ide: ide_timing_compute() fixup
XFER_SW_DMA_0 mode should be excluded from the extended cycle
timing computations.

[ This is just a documentation fix -- code inside the affected
  'if' block already makes sure to accept only PIO modes. ]

Noticed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 11:30:09 -08:00
Bartlomiej Zolnierkiewicz
220c58bc6d ide: make ide_get_best_pio_mode() static
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:36 -08:00
Bartlomiej Zolnierkiewicz
f0e5f62d92 via82cxxx: use ->pio_mode value to determine pair device speed
Use the current PIO mode value instead of the current transfer speed
of the pair device on the port to determine PIO commmand timings used
for both devices on the port.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:36 -08:00
Bartlomiej Zolnierkiewicz
040f6b4f14 tx493xide: use ->pio_mode value to determine pair device speed
Use the current PIO mode value instead of the physical maximum one
of the pair device on the port to determine PIO commmand timings used
for both devices on the port.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:35 -08:00
Bartlomiej Zolnierkiewicz
bb43061193 siimage: use ->pio_mode value to determine pair device speed
Use the current PIO mode value instead of the physical maximum one
of the pair device on the port to determine PIO commmand timings used
for both devices on the port.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:35 -08:00
Bartlomiej Zolnierkiewicz
0716302eec palm_bk3710: use ->pio_mode value to determine pair device speed
Use the current PIO mode value instead of the physical maximum one
of the pair device on the port to determine PIO commmand timings used
for both devices on the port.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:34 -08:00
Bartlomiej Zolnierkiewicz
f657911d73 it821x: use ->pio_mode value to determine pair device speed
Use the current PIO mode value instead of the physical maximum one
of the pair device on the port to determine PIO commmand timings used
for both devices on the port.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:34 -08:00
Bartlomiej Zolnierkiewicz
280d69b127 cs5536: use ->pio_mode value to determine pair device speed
Use the current PIO mode value instead of the physical maximum one
of the pair device on the port to determine PIO commmand timings used
for both devices on the port.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:33 -08:00
Bartlomiej Zolnierkiewicz
a298dc024c cs5535: use ->pio_mode value to determine pair device speed
Use the current PIO mode value instead of the physical maximum one
of the pair device on the port to determine PIO commmand timings used
for both devices on the port.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:33 -08:00
Bartlomiej Zolnierkiewicz
23d8740546 cmd64x: fix handling of address setup timings
Account for the requirements of the DMA mode currently used.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:32 -08:00
Bartlomiej Zolnierkiewicz
f6d23c2e2e amd74xx: use ->pio_mode value to determine pair device speed
Use the current PIO mode value instead of the current transfer speed
of the pair device on the port to determine PIO commmand timings used
for both devices on the port.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:32 -08:00
Bartlomiej Zolnierkiewicz
e4c7112b56 alim15x3: fix handling of UDMA enable bit
Clear UDMA enable bit also for PIO modes.

Based on libata pata_ali host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:31 -08:00
Bartlomiej Zolnierkiewicz
a345c7856e alim15x3: fix handling of DMA timings
Stop depending on the BIOS setup.

Based on libata pata_ali host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:31 -08:00
Bartlomiej Zolnierkiewicz
5740345b87 alim15x3: fix handling of command timings
Stop depending on the BIOS setup.

Based on libata pata_ali host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:30 -08:00
Bartlomiej Zolnierkiewicz
cde727be96 alim15x3: fix handling of address setup timings
Account for the requirements of the other device on the port.

Based on libata pata_ali host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:52:30 -08:00
Bartlomiej Zolnierkiewicz
8e714a074b ide-timings: use ->pio_mode value to determine fastest PIO speed
Use the current PIO mode value instead of the physical maximum one
to determine the fastest allowed PIO for shared PIO/DMA timings.

Affected host drivers: amd74xx and via82cxxx.

[ Update comment to match -DaveM ]

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:47:29 -08:00
Bartlomiej Zolnierkiewicz
8776168ca2 ide: change ->set_dma_mode method parameters
Change ->set_dma_mode method parameters to match ->set_dmamode method
used in struct ata_port_operations.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2010-01-19 01:45:29 -08:00
Bartlomiej Zolnierkiewicz
e085b3cae8 ide: change ->set_pio_mode method parameters
Change ->set_pio_mode method parameters to match ->set_piomode method
used in struct ata_port_operations.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:44:41 -08:00
Bartlomiej Zolnierkiewicz
3fccaa192b ide: add drive->dma_mode field
Add dma_mode field to ide_drive_t matching dma_mode field used in
struct ata_device.

The validity of the field is restricted to ->dma_pio_mode method
only currently in IDE subsystem.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:42:01 -08:00
Bartlomiej Zolnierkiewicz
d2d4e780af ide: add drive->pio_mode field
Add pio_mode field to ide_drive_t matching pio_mode field used in
struct ata_device.

The validity of the field is restricted to ->set_pio_mode method
only currently in IDE subsystem.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:42:00 -08:00
Bartlomiej Zolnierkiewicz
68d0a03616 via82cxxx: fix UDMA settings programming
* preserve 80-wire cable detection bit
* don't clear UDMA settings when programming PIO/MWDMA modes

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:42:00 -08:00
Bartlomiej Zolnierkiewicz
a354ae8747 via82cxxx: add support for VT6415 PCIE PATA IDE Host Controller
Based on commits 5955c7a and 7d948b1 for pata_via host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:41:59 -08:00
Bartlomiej Zolnierkiewicz
5b6c82ea0f via82cxxx: add support for vt8261 and future chips
Based on commit e4d866c for pata_via host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:41:59 -08:00
Bartlomiej Zolnierkiewicz
f931a5d578 via82cxxx: workaround h/w bugs
Add custom struct ide_tp_ops instance to fix the internal bug of some VIA
chipsets which will reset the device register after changing the nIEN bit
in the device control register.

Based on commit bfce5e0 for pata_via host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:41:58 -08:00
Bartlomiej Zolnierkiewicz
a13e4865fa via82cxxx: fix SATA cable detection
Add VIA_SATA_PATA flag for cx700, vx800 and vx855 chipsets
(the first port is SATA).

Based on commits 7585eb1, bfce5e0 and e4d866c for pata_via
host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:41:58 -08:00
Bartlomiej Zolnierkiewicz
76937fa765 ide: add SATA cable detection support
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:41:57 -08:00
Bartlomiej Zolnierkiewicz
42036c85a6 via82cxxx: vx855 is a single channel controller
Based on commit e4d866c for pata_via host driver
(PCI ID was later changed by commit 5993856).

Update my credits while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:25:02 -08:00
Bartlomiej Zolnierkiewicz
cb06fc3f4c serverworks: add missing pci_dev_put() call
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:25:02 -08:00
Bartlomiej Zolnierkiewicz
e7593af6e5 serverworks: cleanup svwks_udma_filter()
* remove dead OSB4 UDMA support
* remove unreachable code
* make isa_dev local to ->init_chipset

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:25:01 -08:00
Bartlomiej Zolnierkiewicz
a337c22727 pdc202xx_old: add ->init_hwif method
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:25:01 -08:00
Bartlomiej Zolnierkiewicz
fb7b0d5b40 opti621: remove stale driver history
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:25:00 -08:00
Bartlomiej Zolnierkiewicz
bd37f65a60 cy82c693: remove stale driver history
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:25:00 -08:00
Bartlomiej Zolnierkiewicz
4d6b328943 cy82c693: fix PIO timings calculations
Just use the standard ide_timing_compute() helper to calculate
PIO timings.  This fixes many issues with the open-coded version
like using 16-bit timings when 8-bit ones should be used or not
accounting for the enhanced cycle time specified by the device.

Based on libata pata_cypress host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:24:59 -08:00
Bartlomiej Zolnierkiewicz
22cabc2619 cmd64x: remove superfluous checks from cmd64x_set_dma_mode()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:24:59 -08:00
Bartlomiej Zolnierkiewicz
60349ab99f cmd64x: fix PIO and MWDMA timings calculations
Just use the standard ide_timing_compute() helper to calculate
PIO and MWDMA timings.  This fixes some issues with the open-coded
version like allowing faster MWDMA timings than the ones required
by the current PIO mode or not accounting for the enhanced MWDMA
cycle time specified by the device.

Based on libata pata_cmd64x host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:24:58 -08:00
Bartlomiej Zolnierkiewicz
31bbb668fb amd74xx: don't change UDMA settings when programming PIO timings
Based on libata pata_amd host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:24:58 -08:00
Bartlomiej Zolnierkiewicz
d23f33de3c alim15x3: cleanup ali_cable_detect()
Remove leftover local_irq_[save,restore]() and FIXME note.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:24:57 -08:00
Bartlomiej Zolnierkiewicz
5f6bd68ef5 alim15x3: remove superfluous locking from ali_set_pio_mode()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:24:57 -08:00
Bartlomiej Zolnierkiewicz
293f18ad72 alim15x3: add ali_fifo_control() helper
Based on libata pata_ali host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:24:56 -08:00
Bartlomiej Zolnierkiewicz
3c8cc8df5a alim15x3: fix PIO timings calculations
Just use the standard ide_timing_compute() helper to calculate
PIO timings.  This fixes many issues with the open-coded version
like potential recovery timings underclocking or not accounting
for the enhanced cycle time specified by the device.

Based on libata pata_ali host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:24:56 -08:00
Bartlomiej Zolnierkiewicz
2b7d03a5cd ide: use standard timing for XFER_PIO_SLOW mode in ide_timing_compute()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-19 01:24:55 -08:00
Wolfram Sang
d4ae5415c6 ide/ide-cs: fix order of releasing resources
ide_detach() called first ide_release() and then release_region(). This
produced the following warnings:

  Trying to free nonexistent resource <000000000000c10e-000000000000c10e>
  Trying to free nonexistent resource <000000000000c100-000000000000c107>

This is true, because the callchain inside ide_release() is:

  ide_release -> pcmcia_disable_device -> pcmcia_release_io

So, the whole io-block is already gone for release_region(). To fix
this, just swap the order of releasing (and remove the now obsolete
shadowing).

bzolnier:
- release resources in ide_release() to fix ordering of events
- remove stale FIXME note while at it

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-15 01:33:08 -08:00
Alan Cox
05227adff2 ide_tape: kill off use of the ->ioctl operation
Ready to get everything using unlocked_ioctl()

For ide_tape we just push down as this is legacy code anyway

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-12 01:56:54 -08:00
Russell King
c3be57b6f3 ide: Fix Promise UDMA33 IDE driver (pdc202xx_old)
On Sun, Jan 03, 2010 at 12:23:14AM +0000, Russell King wrote:
> - with IDE
>   - locks the interrupt line, and makes the machine extremely painful -
>     about an hour to get to the point of being able to unload the
>     pdc202xx_old module.

Having manually bisected kernel versions, I've narrowed it down to some
change between 2.6.30 and 2.6.31.  There's not much which has changed
between the two kernels, but one change stands out like a sore thumb:

+static int pdc202xx_test_irq(ide_hwif_t *hwif)
+{
+       struct pci_dev *dev     = to_pci_dev(hwif->dev);
+       unsigned long high_16   = pci_resource_start(dev, 4);
+       u8 sc1d                 = inb(high_16 + 0x1d);
+
+       if (hwif->channel) {
+               /*
+                * bit 7: error, bit 6: interrupting,
+                * bit 5: FIFO full, bit 4: FIFO empty
+                */
+               return ((sc1d & 0x50) == 0x40) ? 1 : 0;
+       } else  {
+               /*
+                * bit 3: error, bit 2: interrupting,
+                * bit 1: FIFO full, bit 0: FIFO empty
+                */
+               return ((sc1d & 0x05) == 0x04) ? 1 : 0;
+       }
+}

Reading the (documented as a 32-bit) system control register when the
interface is idle gives: 0x01da110c

So, the byte at 0x1d is 0x11, which is documented as meaning that the
primary and secondary FIFOs are empty.

The code above, which is trying to see whether an IRQ is pending, checks
for the IRQ bit to be one, and the FIFO bit to be zero - or in English,
to be non-empty.

Since during a BM-DMA read, the FIFOs will naturally be drained to the
PCI bus, the chance of us getting to the interface before this happens
are extremely small - and if we don't, it means we decide not to service
the interrupt.  Hence, the screaming interrupt problem with drivers/ide.

Fix this by only indicating an interrupt is ready if both the interrupt
and FIFO empty bits are at '1'.

This bug only affects PDC20246/PDC20247 (Promise Ultra33) based cards,
and has been tested on 2.6.31 and 2.6.33-rc2.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-12 01:53:02 -08:00
Bartlomiej Zolnierkiewicz
f75d4a2387 icside: bring back ->maskproc method
Bring back ->maskproc method since it is still needed for proper operation,
as noticed by Russell King:

> This change is bogus.
>
>         writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
>         readb(base + ICS_ARCIN_V6_INTROFFSET_2);
>
>         writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
>         readb(base + ICS_ARCIN_V6_INTROFFSET_1);
>
> This sequence of code does:
>
> 1. enable interrupt 1
> 2. disable interrupt 2
> 3. enable interrupt 2
> 4. disable interrupt 1
>
> which results in the interrupt for the second channel being enabled -
> leaving channel 1 blocked.
>
> Firstly, icside shares its two IDE channels with one DMA engine - so it's
> a simplex interface.  IDE supports those (or did when the code was written)
> serializing requests between the two interfaces.  libata does not.
>
> Secondly, the interrupt lines on icside float when there's no drive connected
> or when the drive has its NIEN bit set, which means that you get spurious
> screaming interrupts which can kill off all expansion card interrupts on
> the machine unless you disable the channel interrupt on the card.
>
> Since libata can not serialize the operation of the two channels like IDE
> can, the libata version of the icside driver does not contain the interrupt
> stearing logic.  Instead, it looks at the status after reset, and if
> nothing was found on that channel, it masks the interrupt from that
> channel.

This patch reverts changes done in commit dff8817 (I became confused due to
non-standard & undocumented ->maskproc method, anyway sorry about that).

Noticed-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-12 01:49:23 -08:00
Bartlomiej Zolnierkiewicz
4cd7d9247f scc_pata: fix module unloading
scc_pata host driver predated module unloading support for IDE host
drivers so even though it supports PCI hot-unplug and implements
PCI device ->remove method it doesn't allow module removal.  Fix it.

Add missing __init/__exit tags to module_init/module_exit functions
while at it (from Peter Huewe).

Noticed-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-08 00:11:01 -08:00
Linus Torvalds
09cea96caa Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (151 commits)
  powerpc: Fix usage of 64-bit instruction in 32-bit altivec code
  MAINTAINERS: Add PowerPC patterns
  powerpc/pseries: Track previous CPPR values to correctly EOI interrupts
  powerpc/pseries: Correct pseries/dlpar.c build break without CONFIG_SMP
  powerpc: Make "intspec" pointers in irq_host->xlate() const
  powerpc/8xx: DTLB Miss cleanup
  powerpc/8xx: Remove DIRTY pte handling in DTLB Error.
  powerpc/8xx: Start using dcbX instructions in various copy routines
  powerpc/8xx: Restore _PAGE_WRITETHRU
  powerpc/8xx: Add missing Guarded setting in DTLB Error.
  powerpc/8xx: Fixup DAR from buggy dcbX instructions.
  powerpc/8xx: Tag DAR with 0x00f0 to catch buggy instructions.
  powerpc/8xx: Update TLB asm so it behaves as linux mm expects.
  powerpc/8xx: Invalidate non present TLBs
  powerpc/pseries: Serialize cpu hotplug operations during deactivate Vs deallocate
  pseries/pseries: Add code to online/offline CPUs of a DLPAR node
  powerpc: stop_this_cpu: remove the cpu from the online map.
  powerpc/pseries: Add kernel based CPU DLPAR handling
  sysfs/cpu: Add probe/release files
  powerpc/pseries: Kernel DLPAR Infrastructure
  ...
2009-12-12 14:27:24 -08:00
Linus Torvalds
e49aedb594 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-next-2.6:
  sl82c105: remove no longer needed debugging code
  sis5513: remove stale TODO
  pdc202xx_old: remove no longer needed debugging code
  cy82c693: remove no longer needed debugging code
  cmd64x: remove no longer needed debugging code
  alim15x3: remove obsolete and dangerous wdc_udma parameter
  ide: Increase WAIT_DRQ to accomodate some CF cards and SSD drives.
  cs5535: add pci id for AMD based CS5535 controllers
  slc90e66: fix UDMA handling
  drivers/ide/tx4938ide.c: use resource_size()
  drivers/ide/ide_platform.c: use resource_size()
  drivers/ide/au1xxx-ide.c: use resource_size()
  hpt366: remove dead old timing tables
  ide: update Kconfig text to mark as deprecated
  ide-tape: remove the BKL
  hpt366: kill unused #define's
2009-12-09 19:45:38 -08:00
Benjamin Herrenschmidt
bcd6acd51f Merge commit 'origin/master' into next
Conflicts:
	include/linux/kvm.h
2009-12-09 17:14:38 +11:00