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Tejun Heo 0191944282 hd: fix locking 
hd dance around local irq and HD_IRQ enable without achieving much.
It ends up transferring data from irq handler with both local irq and
HD_IRQ disabled.  The only place it actually does something is while
transferring the first block of a request which it does with HD_IRQ
disabled but local irq enabled.

Unfortunately, the dancing is horribly broken from locking POV.  IRQ
and timeout handlers access block queue without grabbing the queue
lock and running the driver in SMP configuration crashes the whole
machine pretty quickly.

Remove meaningless irq enable/disable dancing and add proper locking
in issue, irq and timeout paths.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-28 20:24:20 +02:00
..
aoe aoe: WIN_* -> ATA_CMD_* 2009-04-01 21:42:24 +02:00
paride paride/pg.c: xs(): &&/|| confusion 2009-02-18 10:32:01 +01:00
amiflop.c m68k: amiflop - Get rid of sleep_on calls 2009-01-12 20:56:33 +01:00
ataflop.c m68k: atari - Rename "mfp" to "st_mfp" 2009-02-22 09:23:02 -08:00
brd.c brd: fix cacheflushing 2009-04-15 12:10:13 +02:00
cciss.c Replace all DMA_nBIT_MASK macro with DMA_BIT_MASK(n) 2009-04-13 15:04:33 -07:00
cciss.h cciss: kernel scan thread for MSA2012 2009-04-07 08:12:38 +02:00
cciss_cmd.h cciss: kernel scan thread for MSA2012 2009-04-07 08:12:38 +02:00
cciss_scsi.c cciss: Fix cciss SCSI rescan code to better notice device changes 2008-10-09 08:56:18 +02:00
cciss_scsi.h cciss: Fix cciss SCSI rescan code to better notice device changes 2008-10-09 08:56:18 +02:00
cpqarray.c cpqarray: enable bus mastering 2009-03-24 12:35:17 +01:00
cpqarray.h
cryptoloop.c drivers: Remove unnecessary inclusions of asm/semaphore.h 2008-04-18 22:16:32 -04:00
DAC960.c dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
DAC960.h
floppy.c floppy: provide a PNP device table in the module. 2009-04-02 19:04:49 -07:00
hd.c hd: fix locking 2009-04-28 20:24:20 +02:00
ida_cmd.h
ida_ioctl.h
Kconfig mflash: initial support 2009-04-07 08:12:38 +02:00
loop.c loop: mutex already unlocked in loop_clr_fd() 2009-04-07 13:48:21 +02:00
Makefile mflash: initial support 2009-04-07 08:12:38 +02:00
mg_disk.c mg_disk: fix CONFIG_LBD=y warning 2009-04-28 20:24:20 +02:00
nbd.c nbd: trivial cleanups 2009-04-02 19:05:02 -07:00
pktcdvd.c pktcdvd: remove broken dev_t export of class devices 2008-12-10 10:03:32 -08:00
ps3disk.c powerpc/ps3: Printing fixups for l64 to ll64 conversion drivers/block 2009-01-16 16:15:13 +11:00
ps3vram.c proc 2/2: remove struct proc_dir_entry::owner 2009-03-31 01:14:44 +04:00
smart1,2.h
sunvdc.c sparc64: Fix unsigned long long warnings in drivers. 2009-01-06 13:20:38 -08:00
swim.c m68k: mac - Add SWIM floppy support 2009-03-26 21:15:27 +01:00
swim3.c [PATCH] switch swim3 2008-10-21 07:48:03 -04:00
swim_asm.S m68k: mac - Add SWIM floppy support 2009-03-26 21:15:27 +01:00
sx8.c dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
ub.c USB: add reset endpoint operations 2009-04-17 10:50:27 -07:00
umem.c umem: fix request_queue lock warning 2009-04-24 08:54:21 +02:00
umem.h
viodasd.c [PATCH] switch viodasd 2008-10-21 07:48:07 -04:00
virtio_blk.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 2008-12-30 17:37:25 -08:00
xd.c [PATCH] switch xd 2008-10-21 07:48:11 -04:00
xd.h [PATCH] switch xd 2008-10-21 07:48:11 -04:00
xen-blkfront.c Fix kernel NULL pointer dereference in xen-blkfront 2009-03-05 12:04:57 +01:00
xsysace.c xsysace: Fix dereferencing of cf_id after hd_driveid removal 2009-04-08 14:13:04 +02:00
z2ram.c [PATCH] switch z2ram 2008-10-21 07:48:17 -04:00