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56f0ddadce
linux/drivers/ide
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Sebastian Andrzej Siewior 56f0ddadce ide: Handle irq disabling consistently 
ide_timer_expiry() disables interrupt at function entry when acquiring
hwif->lock. Before disabling the device interrupt it unlocks hwif->lock,
but interrupts stay disabled. After the call to disable_irq() interrupts
are disabled again, which is a pointless exercise.

After the device irq handler has been invoked with interrupts disabled,
hwif->lock is acquired again with spin_lock_irq() because the device irq
handler might have reenabled interrupts. This is not documented and
confusing for the casual reader.

Remove the redundant local_irq_disable() and add a comment which explains
why hwif->lock has to be reacquired with spin_lock_irq().

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-05 16:26:46 -04:00
..
aec62xx.c
ali14xx.c
alim15x3.c alim15x3: move irq-restore before pci_dev_put() 2018-06-05 16:26:46 -04:00
amd74xx.c
atiixp.c
au1xxx-ide.c
buddha.c
cmd64x.c
cmd640.c
cs5520.c
cs5530.c
cs5535.c
cs5536.c
cy82c693.c
delkin_cb.c
dtc2278.c
falconide.c
gayle.c
hpt366.c
ht6560b.c
icside.c
ide_platform.c
ide-4drives.c
ide-acpi.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ide-atapi.c block: sanitize blk_get_request calling conventions 2018-05-14 08:55:12 -06:00
ide-cd_ioctl.c block: sanitize blk_get_request calling conventions 2018-05-14 08:55:12 -06:00
ide-cd_verbose.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ide-cd.c Merge branch 'hch.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 10:00:01 -07:00
ide-cd.h block: Move SECTOR_SIZE and SECTOR_SHIFT definitions into <linux/blkdev.h> 2018-03-17 14:45:23 -06:00
ide-cs.c
ide-devsets.c block: sanitize blk_get_request calling conventions 2018-05-14 08:55:12 -06:00
ide-disk_ioctl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ide-disk_proc.c ide: replace ->proc_fops with ->proc_show 2018-05-16 07:24:30 +02:00
ide-disk.c block: sanitize blk_get_request calling conventions 2018-05-14 08:55:12 -06:00
ide-disk.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ide-dma-sff.c
ide-dma.c ide: kill ide_toggle_bounce 2018-05-07 07:15:41 +02:00
ide-eh.c block: introduce new block status code type 2017-06-09 09:27:32 -06:00
ide-floppy_ioctl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ide-floppy_proc.c ide: replace ->proc_fops with ->proc_show 2018-05-16 07:24:30 +02:00
ide-floppy.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ide-floppy.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ide-gd.c
ide-gd.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ide-generic.c treewide: simplify Kconfig dependencies for removed archs 2018-03-26 15:55:57 +02:00
ide-io-std.c
ide-io.c ide: Handle irq disabling consistently 2018-06-05 16:26:46 -04:00
ide-ioctls.c block: sanitize blk_get_request calling conventions 2018-05-14 08:55:12 -06:00
ide-iops.c
ide-legacy.c
ide-lib.c ide: kill ide_toggle_bounce 2018-05-07 07:15:41 +02:00
ide-park.c block: sanitize blk_get_request calling conventions 2018-05-14 08:55:12 -06:00
ide-pci-generic.c
ide-pio-blacklist.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ide-pm.c block: sanitize blk_get_request calling conventions 2018-05-14 08:55:12 -06:00
ide-pnp.c PNP: ide: constify pnp_device_id 2017-08-16 11:25:16 -07:00
ide-probe.c ide: remove the PCI_DMA_BUS_IS_PHYS check 2018-05-07 07:15:41 +02:00
ide-proc.c ide: replace ->proc_fops with ->proc_show 2018-05-16 07:24:30 +02:00
ide-scan-pci.c ide: fix IRQ assignment for PCI bus order probing 2017-10-03 14:03:31 -05:00
ide-sysfs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ide-tape.c Merge branch 'hch.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 10:00:01 -07:00
ide-taskfile.c block: consistently use GFP_NOIO instead of __GFP_NORECLAIM 2018-05-14 08:55:18 -06:00
ide-timings.c ide: avoid warning for timings calculation 2017-07-21 04:37:22 +01:00
ide-xfer-mode.c
ide.c treewide: Fix function prototypes for module_param_call() 2017-10-31 15:30:37 +01:00
it821x.c
it8172.c
it8213.c
jmicron.c
Kconfig treewide: simplify Kconfig dependencies for removed archs 2018-03-26 15:55:57 +02:00
macide.c
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ns87415.c
opti621.c
palm_bk3710.c ide: palm_bk3710: add __initdata to palm_bk3710_port_info 2017-02-27 20:43:26 -05:00
pdc202xx_new.c
pdc202xx_old.c
piix.c
pmac.c ide: pmac: Convert to using %pOF instead of full_name 2017-09-01 16:42:51 +10:00
q40ide.c
qd65xx.c
qd65xx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rapide.c
rz1000.c
sc1200.c
serverworks.c
setup-pci.c ide: pci: free PCI BARs on initialization failure 2017-10-03 14:02:57 -05:00
sgiioc4.c
siimage.c block: introduce new block status code type 2017-06-09 09:27:32 -06:00
sis5513.c block: split scsi_request out of struct request 2017-01-27 15:08:35 -07:00
sl82c105.c sl82c105: deprecate pci_get_bus_and_slot() 2018-01-11 17:29:04 -06:00
slc90e66.c
tc86c001.c
triflex.c
trm290.c
tx4938ide.c
tx4939ide.c
umc8672.c
via82cxxx.c