Commit graph

6657 commits

Author SHA1 Message Date
James Bottomley
3a5c19c23d [SCSI] fix use-after-free in scsi_init_io()
we're using a pointer through a freed command to reset the request,
which has shown up as an oops with slab poisoning:

Reported-by: Tejun Heo <tj@kernel.org>
Reported-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-09 09:58:18 -05:00
Alan Stern
7e44331240 [SCSI] sd: fix medium-removal bug
Commit 409f3499a2 (scsi/sd: remove big
kernel lock) introduced a bug in the sd_release routine.  Medium
removal should be allowed when the number of open file references
drops to 0, not when it becomes non-zero.

This patch (as1414) adjusts the test to fix the bug.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-07 10:31:54 -05:00
Madhuranath Iyengar
0fb576d825 [SCSI] qla2xxx: Update version number to 8.03.04-k0.
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-05 15:22:55 -03:00
Giridhar Malavali
1bd58b89e8 [SCSI] qla2xxx: Check for empty slot in request queue before posting Command type 6 request.
For ISP82xx, the check for empty slot in request queue before posting command type 6
request was missing. This could lead to request queue entry corruptions causing
IO timeouts.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-05 15:22:53 -03:00
Lalit Chandivade
0374f55ed8 [SCSI] qla2xxx: Cover UNDERRUN case where SCSI status is set.
Currently, if target sets the SCSI Status (with Check condition)
and there is no FCP residual bit set then driver  does not check
for dropped frame.  This could lead to data corruption.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-05 15:18:31 -03:00
Giridhar Malavali
4142b1987f [SCSI] qla2xxx: Correctly set fw hung and complete only waiting mbx.
The fw_hung flag should be set ir-respective of if there is a
mbx command pending or not. Also the complete should be called
if there is a mbx waiting.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-05 15:18:29 -03:00
Lalit Chandivade
efa786cc43 [SCSI] qla2xxx: Reset seconds_since_last_heartbeat correctly.
The seconds_since_last_heartbeat should be checked for consecutive
heartbeat checks. Currently it could happen that seconds_since_last_heartbeat
gets set to max (2 seconds) for non-consecutive heartbeat checks.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-05 15:18:28 -03:00
Arun Easi
970ee0c52a [SCSI] qla2xxx: make rport deletions explicit during vport removal
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-05 15:13:13 -03:00
Arun Easi
feafb7b171 [SCSI] qla2xxx: Fix vport delete issues
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-05 15:13:12 -03:00
David Miller
2e4c332913 [SCSI] sd, sym53c8xx: Remove warnings after vsprintf %pV introducation.
GCC warns about empty printf format strings, and after
the addition of %pV these existing such cases in the
scsi driver layer were exposed enough for the compiler
to start seeing them.

Based almost entirely upon a patch by Joe Perches.

[jejb: fix up sym53c8xx msg]
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-02 17:23:20 -03:00
Jean Sacren
6f131ce1df [SCSI] Fix warning: zero-length gnu_printf format string
warning: zero-length gnu_printf format string

Fix the above warning by inserting a space into the literal string.

Signed-off-by: Jean Sacren <sakiwit@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-02 17:15:31 -03:00
Stephen M. Cameron
36ed2176fe [SCSI] hpsa: disable doorbell reset on reset_devices
The doorbell reset initially appears to work correctly,
the controller resets, comes up, some i/o can even be
done, but on at least some Smart Arrays in some servers,
it eventually causes a subsequent controller lockup due
to some kind of PCIe error, and kdump can end up leaving
the root filesystem in an unbootable state.  For this
reason, until the problem is fixed, or at least isolated
to certain hardware enough to be avoided, the doorbell
reset should not be used at all.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-02 17:14:44 -03:00
Jayamohan Kallickal
b15d05b0d3 [SCSI] be2iscsi: Fix for Login failure
The current code in tree has problems with Login.
This patch fixes the Login Failure .

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
[mnc: Can't believe I missed that.]
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-02 17:13:09 -03:00
Jiri Slaby
d842a93c4b [SCSI] fix bio.bi_rw handling
Return of the bi_rw tests is no longer bool after commit 74450be1. So
testing against constants doesn't make sense anymore. Fix this bug in
osd_req_read by removing "== 1" in test.

This is not a problem now, where REQ_WRITE is 1, but this can change
in the future and we don't want to rely on that.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-09-02 17:11:55 -03:00
Andrew Morton
626115cda9 drivers/scsi/qla4xxx: fix build
gcc-4.0.2:

  drivers/scsi/qla4xxx/ql4_os.c: In function 'qla4_8xxx_error_recovery':
  drivers/scsi/qla4xxx/ql4_glbl.h:135: sorry, unimplemented: inlining failed in call to 'qla4_8xxx_set_drv_active': function body not available
  drivers/scsi/qla4xxx/ql4_os.c:2377: sorry, unimplemented: called from here
  drivers/scsi/qla4xxx/ql4_glbl.h:135: sorry, unimplemented: inlining failed in call to 'qla4_8xxx_set_drv_active': function body not available
  drivers/scsi/qla4xxx/ql4_os.c:2393: sorry, unimplemented: called from here

Cc: Ravi Anand <ravi.anand@qlogic.com>
Cc: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-20 09:34:56 -07:00
David Miller
a7c8962bfb arcmsr_hba: Missing slab.h include
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-17 18:07:43 -07:00
Linus Torvalds
c29c08b598 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (28 commits)
  [SCSI] qla4xxx: fix compilation warning
  [SCSI] make error handling more robust in the face of reservations
  [SCSI] tgt: fix warning
  [SCSI] drivers/message/fusion: Adjust confusing if indentation
  [SCSI] Return NEEDS_RETRY for eh commands with status BUSY
  [SCSI] ibmvfc: Driver version 1.0.9
  [SCSI] ibmvfc: Fix terminate_rport_io
  [SCSI] ibmvfc: Fix rport add/delete race resulting in oops
  [SCSI] lpfc 8.3.16: Change LPFC driver version to 8.3.16
  [SCSI] lpfc 8.3.16: FCoE Discovery and Failover Fixes
  [SCSI] lpfc 8.3.16: SLI Additions, updates, and code cleanup
  [SCSI] pm8001: introduce missing kfree
  [SCSI] qla4xxx: Update driver version to 5.02.00-k3
  [SCSI] qla4xxx: Added AER support for ISP82xx
  [SCSI] qla4xxx: Handle outstanding mbx cmds on hung f/w scenarios
  [SCSI] qla4xxx: updated mbx_sys_info struct to sync with FW 4.6.x
  [SCSI] qla4xxx: clear AF_DPC_SCHEDULED flage when exit from do_dpc
  [SCSI] qla4xxx: Stop firmware before doing init firmware.
  [SCSI] qla4xxx: Use the correct request queue.
  [SCSI] qla4xxx: set correct value in sess->recovery_tmo
  ...
2010-08-14 12:34:34 -07:00
Linus Torvalds
26df0766a7 Merge branch 'params' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
* 'params' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: (22 commits)
  param: don't deref arg in __same_type() checks
  param: update drivers/acpi/debug.c to new scheme
  param: use module_param in drivers/message/fusion/mptbase.c
  ide: use module_param_named rather than module_param_call
  param: update drivers/char/ipmi/ipmi_watchdog.c to new scheme
  param: lock if_sdio's lbs_helper_name and lbs_fw_name against sysfs changes.
  param: lock myri10ge_fw_name against sysfs changes.
  param: simple locking for sysfs-writable charp parameters
  param: remove unnecessary writable charp
  param: add kerneldoc to moduleparam.h
  param: locking for kernel parameters
  param: make param sections const.
  param: use free hook for charp (fix leak of charp parameters)
  param: add a free hook to kernel_param_ops.
  param: silence .init.text references from param ops
  Add param ops struct for hvc_iucv driver.
  nfs: update for module_param_named API change
  AppArmor: update for module_param_named API change
  param: use ops in struct kernel_param, rather than get and set fns directly
  param: move the EXPORT_SYMBOL to after the definitions.
  ...
2010-08-12 10:01:59 -07:00
Linus Torvalds
58d4ea65b9 Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6:
  mmc_spi: Fix unterminated of_match_table
  of/sparc: fix build regression from of_device changes
  of/device: Replace struct of_device with struct platform_device
2010-08-12 09:11:31 -07:00
FUJITA Tomonori
d80e0d96a3 scsi: 53c700: remove dma_is_consistent usage
This driver is the only user of dma_is_consistent().  We plan to remove this
API.

The driver uses the API in the following way:

BUG_ON(!dma_is_consistent(hostdata->dev, pScript) && L1_CACHE_BYTES < dma_get_cache_alignment());

The above code tries to see if L1_CACHE_BYTES is greater than
dma_get_cache_alignment() on sysmtes that can not allocate coherent memory
(some old systems can't).

James Bottomley exmplained that this is necesary because the driver packs the
set of mailboxes into a single coherent area and separates the different
usages by a L1 cache stride.  So it's fatal if the dma

He also pointed out that we can kill this checking because we don't hit this
BUG_ON on all architectures that actually use the driver.

(akpm: stolen from the scsi tree because
dma-mapping-remove-dma_is_consistent-api.patch needs it)

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:21 -07:00
Andy Shevchenko
ecc3099002 drivers: scsi: use newly introduced hex_to_bin() method
Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Cc: Adaptec OEM Raid Solutions <aacraid@adaptec.com>
Cc: "James E.J. Bottomley" <James.Bottomley@suse.de>
Cc: James Smart <james.smart@emulex.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:02 -07:00
Julia Lawall
3094141c65 drivers/scsi: 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>
Cc: Doug Gilbert <dgilbert@interlog.com>
Cc: Boaz Harrosh <bharrosh@panasas.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:02 -07:00
Andrew Morton
a737b88df8 scsi: remove private BIT macros
A couple of scsi drivers define a BIT() macro, duplicating the one in
bitops.h.

Cc: Jing Huang <huangj@brocade.com>
Cc: Robert Love <robert.w.love@intel.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:01 -07:00
Randy Dunlap
5c90ad905b scsi: fix bnx2i build errors
bnx2i should depend on NET since it selects SCSI_ISCSI_ATTRS, which
depends on NET.

Also move the dependencies together.

The "depends" change fixes multiple build errors when CONFIG_NET is
not enabled:
ERROR: "skb_trim" [drivers/scsi/scsi_transport_iscsi.ko] undefined!
ERROR: "netlink_kernel_create" [drivers/scsi/scsi_transport_iscsi.ko] undefined!
ERROR: "netlink_kernel_release" [drivers/scsi/scsi_transport_iscsi.ko] undefined!
ERROR: "skb_pull" [drivers/scsi/scsi_transport_iscsi.ko] undefined!
ERROR: "init_net" [drivers/scsi/scsi_transport_iscsi.ko] undefined!
ERROR: "__alloc_skb" [drivers/scsi/scsi_transport_iscsi.ko] undefined!
ERROR: "netlink_broadcast" [drivers/scsi/scsi_transport_iscsi.ko] undefined!
ERROR: "kfree_skb" [drivers/scsi/scsi_transport_iscsi.ko] undefined!
ERROR: "skb_put" [drivers/scsi/scsi_transport_iscsi.ko] undefined!

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Anil Veerabhadrappa <anilgv@broadcom.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:01 -07:00
Randy Dunlap
b204524005 scsi: fix pmcraid build errors
pmcraid should depend on NET since it uses netlink interfaces.
This fixes multiple build errors when CONFIG_NET is not enabled:

ERROR: "genl_register_family" [drivers/scsi/pmcraid.ko] undefined!
ERROR: "genl_unregister_family" [drivers/scsi/pmcraid.ko] undefined!
ERROR: "nla_put" [drivers/scsi/pmcraid.ko] undefined!
ERROR: "init_net" [drivers/scsi/pmcraid.ko] undefined!
ERROR: "__alloc_skb" [drivers/scsi/pmcraid.ko] undefined!
ERROR: "netlink_broadcast" [drivers/scsi/pmcraid.ko] undefined!
ERROR: "kfree_skb" [drivers/scsi/pmcraid.ko] undefined!
ERROR: "skb_put" [drivers/scsi/pmcraid.ko] undefined!

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Anil Ravindranath <anil_ravindranath@pmc-sierra.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:01 -07:00
Roel Kluin
6de61f9d24 bfa: wrong fcport H2I message tested in bfa_fcport_isr()
It appears that the wrong fcport H2I message was tested

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Jing Huang <huangj@Brocade.COM>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:01 -07:00
Joe Perches
87da32356b drivers/scsi/ch.c: don't use vprintk as macro
It's an exported symbol of kernel/printk.c

Rename vprintk and dprintk macros to more common VPRINTK and DPRINTK
Add do { } while(0) around macros
Add level to VPRINTK so KERN_CONT can be used a couple of times.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:01 -07:00
Yong Zhang
6d154db6b3 scsi: bfa: correct onstack wait_queue_head declaration
Use DECLARE_WAIT_QUEUE_HEAD_ONSTACK to make lockdep happy

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Cc: Jing Huang <huangj@brocade.com>
Cc: James E.J. Bottomley <James.Bottomley@suse.de>
Cc: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:01 -07:00
Joe Perches
ae68230c2d drivers/scsi/qla2xxx/qla_os.c: fix continuation line formats
String constants that are continued on subsequent lines with \ will cause
spurious whitespace in the resulting output.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: James E.J. Bottomley <James.Bottomley@suse.de>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Cc: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:01 -07:00
H Hartley Sweeten
439d77f70f scsi/sd.c: quiet all sparse noise
In sd_store_cache_type the symbol 'len' is declared twice.  Remove the
second declaration to quiet the following sparse warning.

warning: symbol 'len' shadows an earlier one

In sd_probe the variable 'index' is declared as a u32.  This variable is
used in a call to ida_get_new which is expecting an int *.  Make the
variable an int to quiet the following sparse warning.

warning: incorrect type in argument 2 (different signedness)

There are 4 symbols in the file that are not exported and produce
the following sparse warnings.

warning: symbol 'sd_cdb_cache' was not declared. Should it be static?
warning: symbol 'sd_cdb_pool' was not declared. Should it be static?
warning: symbol 'sd_read_protection_type' was not declared. Should it be static?
warning: symbol 'sd_read_app_tag_own' was not declared. Should it be static?

Make them static to quiet the warnings.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: James E.J. Bottomley <James.Bottomley@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:01 -07:00
Bartlomiej Zolnierkiewicz
d6e9fb46cd scsi: remove superfluous NULL pointer check from scsi_kill_request()
Dan's list included:

drivers/scsi/scsi_lib.c +1365 scsi_kill_request(9) warning: variable derefenced in initializer 'cmd'
drivers/scsi/scsi_lib.c +1365 scsi_kill_request(9) warning: variable derefenced before check 'cmd'

We dereference cmd (and possible OOPS if cmd == NULL) before starting the
request so just remove the superfluous debugging code altogether.

[ bart: the potential NULL pointer dereference was finally fixed in
  (much later than mine) commit 03b1470 but my patch is still valid ]

Reported-by: Dan Carpenter <error27@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Eugene Teo <eteo@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:00 -07:00
Julia Lawall
85bc081f44 drivers/scsi/aic94xx/aic94xx_init.c: correct the size argument to kmalloc
In each case, the destination of the allocation has type struct **, so the
elements of the array should have pointer type, not structure type.

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

// <smpl>
@disable sizeof_type_expr@
type T;
T **x;
@@

  x =
  <+...sizeof(
- T
+ *x
  )...+>
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Rolf Eike Beer <eike-kernel@sf-tec.de>
Cc: Joe Perches <joe@perches.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:00 -07:00
Roel Kluin
d8187b945a dc395x: decrease iteration for tag_number of max_command in start_scsi()
The tag_number reaches dcb->max_command + 1 after the loop, but when
the tag_number equals dcb->max_command an error message is already
issued. The last iteration therefore appears obsolete.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Oliver Neukum <oliver@neukum.name>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:00 -07:00
Ondrej Zary
702a98c633 g_NCR5380: fix broken MMIO compilation
The ifdefs are broken so the MMIO code is never compiled and so it's
broken too.  Fix them all.  Untested as I don't have the hardware.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Reviewed-by: Andy Walls <awalls@md.metrocast.net>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:00 -07:00
Ondrej Zary
c94babbaf8 g_NCR5380: remove misleading pnp error message
Remove misleading error message that appears after pnp card has been
detected correctly.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:00 -07:00
Julia Lawall
95cc7baa7f drivers/scsi: remove unnecessary NULL test
At the point where cmnd is initialized, it is tested for NULL, so it
doesn't have to be tested again here.

A simplified version of the semantic match that detects this problem is as
follows (http://coccinelle.lip6.fr/):

// <smpl>
@match exists@
expression x, E;
identifier fld;
@@

* x->fld
  ... when != \(x = E\|&x\)
* x == NULL
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:00 -07:00
Roel Kluin
085267acd0 NCR5380: bit MR_DMA_MODE set twice in NCR5380_transfer_dma()
Besides keeping the line short, the second setting of the MR_DMA_MODE bit
was removed.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:00 -07:00
Roel Kluin
2c076eea6d gdth: unmap ccb_phys when scsi_add_host() fails in gdth_eisa_probe_one()
unmap ccb_phys as well when scsi_add_host() fails

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Achim Leubner <achim_leubner@adaptec.com>
Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:59:00 -07:00
Roel Kluin
ef3f7cc412 osst: fix read buffer overflow
Check whether index is within bounds before testing the element.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Willem Riede <osst@riede.org>
Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11 08:58:59 -07:00
Rusty Russell
d6d1b650ae param: simple locking for sysfs-writable charp parameters
Since the writing to sysfs can free the old one, we need to block that
when we access the charp variables.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Dan Williams <dcbw@redhat.com>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Jing Huang <huangj@brocade.com>
Cc: James E.J. Bottomley <James.Bottomley@suse.de>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: user-mode-linux-devel@lists.sourceforge.net
Cc: libertas-dev@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-scsi@vger.kernel.org
Cc: linux-usb@vger.kernel.org
2010-08-11 23:04:31 +09:30
Vikas Chaudhary
3c3e210877 [SCSI] qla4xxx: fix compilation warning
Fix following warning:

drivers/scsi/qla4xxx/ql4_nx.c: In function 'qla4_8xxx_get_flash_info':
drivers/scsi/qla4xxx/ql4_nx.c:1952: warning: 'mid' may be used uninitialized in this function
drivers/scsi/qla4xxx/ql4_nx.c:1952: note: 'mid' was declared here
drivers/scsi/qla4xxx/ql4_nx.c:1952: warning: 'fid' may be used uninitialized in this function
drivers/scsi/qla4xxx/ql4_nx.c:1952: note: 'fid' was declared here

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-08-11 00:59:01 -04:00
James Bottomley
67110dfd45 [SCSI] make error handling more robust in the face of reservations
commit 5f91bb050e
Author: Michael Reed <mdr@sgi.com>
Date:   Mon Aug 10 11:59:28 2009 -0500

    [SCSI] reservation conflict after timeout causes device to be taken offline

Flipped us from always returning failed to always returning success in
the name of fixing the problem where reservation conflict returns from
test unit ready cause the device always to be taken offline.
Unfortuantely, it also introduced a problem whereby for commands other
than test unit ready, the eh dispatcher thinks they succeeded when
reservation conflict is returned, whereas in reality they failed.  Fix
this by only returning success for the test unit ready case.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-08-11 00:58:33 -04:00
Joe Eykholt
3deee42088 [SCSI] tgt: fix warning
Using scsi_tgt_lib in a new target module, we were getting
the following warning and a stack traceback on every I/O completion:

WARNING: at block/blk-core.c:1108

Which is claiming we may be leaking a bio.
We don't leak bios (blk_rq_unmap_user should free them).

Set rq->bio to NULL before calling scsi_host_put_command().
This was as advised by Fujita Tomonori.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-08-11 00:55:42 -04:00
Hannes Reinecke
3eb3a92851 [SCSI] Return NEEDS_RETRY for eh commands with status BUSY
When the transport is busy and we're sending an EH command drivers
occasionally return 'BUSY'. As this in most cases is the TUR
command sent as part of the error recovery this is a sure way
to make the error recovery escalate. Returning 'NEEDS_RETRY'
here will just retry the TUR command and eventually abort the
original command, thus making error handling far smoother.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-08-11 00:51:20 -04:00
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
FUJITA Tomonori
e96f6abe02 scsi: use REQ_TYPE_FS for flush request
scsi-ml uses REQ_TYPE_BLOCK_PC for flush requests from file
systems. The definition of REQ_TYPE_BLOCK_PC is that we don't retry
requests even when we can (e.g. UNIT ATTENTION) and we send the
response to the callers (then the callers can decide what they want).
We need a workaround such as the commit
77a4229719 to retry BLOCK_PC flush
requests. We will need the similar workaround for discard requests too
since SCSI-ml handle them as BLOCK_PC internally.

This uses REQ_TYPE_FS for flush requests from file systems instead of
REQ_TYPE_BLOCK_PC.

scsi-ml retries only REQ_TYPE_FS requests that have data to
transfer when we can retry them (e.g. UNIT_ATTENTION). However, we
also need to retry REQ_TYPE_FS requests without data because the
callers don't.

This also changes scsi_check_sense() to retry all the REQ_TYPE_FS
requests when appropriate. Thanks to scsi_noretry_cmd(),
REQ_TYPE_BLOCK_PC requests don't be retried as before.

Note that basically, this reverts the commit
77a4229719 since now we use REQ_TYPE_FS
for flush requests.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07 18:52:41 +02:00
FUJITA Tomonori
6a32a8aed5 scsi: convert discard to REQ_TYPE_FS from REQ_TYPE_BLOCK_PC
Jens, any reason why this isn't included in your for-2.6.36 yet?

=
From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Subject: [PATCH resend] scsi: convert discard to REQ_TYPE_FS from REQ_TYPE_BLOCK_PC

The block layer (file systems) sends discard requests as REQ_TYPE_FS
(the role of REQ_TYPE_FS is that setting up commands and interpreting
the results). But SCSI-ml treats discard requests as
REQ_TYPE_BLOCK_PC.

scsi-ml can handle discard requests as REQ_TYPE_FS
easily. scsi_setup_discard_cmnd() sets up struct request and the bio
nicely. Only remaining issue is that discard requests can't be
completed partially so we need to modify sd_done.

This conversion also fixes the problem that discard requests aren't
retried when possible (e.g. UNIT ATTENTION).

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 18:52:31 +02:00
Arnd Bergmann
409f3499a2 scsi/sd: remove big kernel lock
Every user of the BKL in the sd driver is the
result of the pushdown from the block layer
into the open/close/ioctl functions.

The only place that used to rely on the BKL is
the sdkp->openers variable, which gets converted
into an atomic_t.

Nothing else seems to rely on the BKL, since the
functions do not touch global data without holding
another lock, and the open/close functions are
still protected from concurrent execution using
the bdev->bd_mutex.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-scsi@vger.kernel.org
Cc: "James E.J. Bottomley" <James.Bottomley@suse.de>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-08-07 18:26:08 +02:00
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