AuxXxilium/linux_dsm_epyc7002
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a451751172
linux_dsm_epyc7002/drivers
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Akinobu Mita a451751172 scsi_debug: fix do_device_access() with wrap around range 
do_device_access() is a function that abstracts copying SG list from/to
ramdisk storage (fake_storep).

It must deal with the ranges exceeding actual fake_storep size, because
such ranges are valid if virtual_gb is set greater than zero, and they
should be treated as fake_storep is repeatedly mirrored up to virtual
size.

Unfortunately, it can't deal with the range which wraps around the end of
fake_storep.  A wrap around range is copied by two
sg_copy_{from,to}_buffer() calls, but sg_copy_{from,to}_buffer() can't
copy from/to in the middle of SG list, therefore the second call can't
copy correctly.

This fixes it by using sg_pcopy_{from,to}_buffer() that can copy from/to
the middle of SG list.

This also simplifies the assignment of sdb->resid in
fill_from_dev_buffer().  Because fill_from_dev_buffer() is now only called
once per command execution cycle.  So it is not necessary to take care to
decrease sdb->resid if fill_from_dev_buffer() is called more than once.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: Douglas Gilbert <dgilbert@interlog.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Horia Geanta <horia.geanta@freescale.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-09 10:33:30 -07:00
..
accessibility
acpi Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-07-04 10:29:23 -07:00
amba
ata Merge branch 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2013-07-03 19:49:46 -07:00
atm
auxdisplay
base Device tree updates for v3.11 2013-07-04 15:51:45 -07:00
bcma
block Merge branch 'akpm' (updates from Andrew Morton) 2013-07-03 17:12:13 -07:00
bluetooth
bus ARM SoC device tree changes 2013-07-02 14:23:01 -07:00
cdrom drivers/cdrom/cdrom.c: use kzalloc() for failing hardware 2013-07-03 16:07:25 -07:00
char mwave: fix info leak in mwave_ioctl() 2013-07-09 10:33:28 -07:00
clk Power management and ACPI updates for 3.11-rc1 2013-07-03 14:35:40 -07:00
clocksource Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-07-06 14:09:38 -07:00
connector
cpufreq Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
cpuidle Power management and ACPI updates for 3.11-rc1 2013-07-03 14:35:40 -07:00
crypto crypto: talitos: use sg_pcopy_to_buffer() 2013-07-09 10:33:30 -07:00
dca
devfreq Merge branch 'akpm' (updates from Andrew Morton) 2013-07-03 17:12:13 -07:00
dio
dma drivers/dma/iop-adma.c: fix new warnings 2013-07-09 10:33:19 -07:00
edac Add MCE signatures for family 0x15, models 30-3f. 2013-07-03 13:11:18 -07:00
eisa
extcon drivers: avoid format string in dev_set_name 2013-07-03 16:07:41 -07:00
firewire
firmware Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-07-04 10:29:23 -07:00
fmc FMC: fix error handling in probe() function 2013-06-24 16:23:25 -07:00
gpio Power management and ACPI updates for 3.11-rc1 2013-07-03 14:35:40 -07:00
gpu Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-07-04 15:35:08 -07:00
hsi drivers: avoid format string in dev_set_name 2013-07-03 16:07:41 -07:00
hv drivers: hv: allocate synic structures before hv_synic_init() 2013-06-24 16:24:17 -07:00
hwmon New driver to support GMT G762/G763 pwm fan controllers 2013-07-03 19:56:35 -07:00
hwspinlock
i2c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-07-04 14:02:09 -07:00
ide drivers: avoid format string in dev_set_name 2013-07-03 16:07:41 -07:00
idle
iio
infiniband Device tree updates for v3.11 2013-07-04 15:51:45 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-07-04 15:35:08 -07:00
iommu drivers/iommu/msm_iommu_dev.c: fix leak and clean up error paths 2013-07-09 10:33:20 -07:00
ipack
irqchip Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-07-02 16:14:35 -07:00
isdn drivers: avoid format string in dev_set_name 2013-07-03 16:07:41 -07:00
leds leds: mc13783: Fix "uninitialized variable" warning 2013-07-02 08:44:02 -07:00
lguest Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
macintosh macintosh/windfarm: Remove obsolete cleanup for clientdata 2013-07-01 11:46:56 +10:00
mailbox
md Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
media Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
memory
memstick drivers/memstick/host/r592.c: convert to module_pci_driver 2013-07-03 16:08:06 -07:00
message drivers: avoid format strings in names passed to alloc_workqueue() 2013-07-03 16:07:41 -07:00
mfd sound updates for 3.11 2013-07-03 19:52:22 -07:00
misc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
mmc Power management and ACPI updates for 3.11-rc1 2013-07-03 14:35:40 -07:00
mtd A couple of fixes and clean-ups, allow for assigning user-defined 2013-07-05 12:09:48 -07:00
net Device tree updates for v3.11 2013-07-04 15:51:45 -07:00
nfc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
ntb
nubus
of Device tree updates for v3.11 2013-07-04 15:51:45 -07:00
oprofile
parisc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-07-03 09:10:19 -07:00
parport Merge branch 'akpm' (updates from Andrew Morton) 2013-07-03 17:12:13 -07:00
pci Merge branch 'akpm' (updates from Andrew Morton) 2013-07-03 17:12:13 -07:00
pcmcia Driver core patches for 3.11-rc1 2013-07-02 11:44:19 -07:00
pinctrl Pin control changes for the v3.11 kernel cycle: 2013-07-03 11:48:03 -07:00
platform drivers: avoid format string in dev_set_name 2013-07-03 16:07:41 -07:00
pnp Power management and ACPI updates for 3.11-rc1 2013-07-03 14:35:40 -07:00
power reboot: arm: change reboot_mode to use enum reboot_mode 2013-07-09 10:33:29 -07:00
pps pps-gpio: add device-tree binding and support 2013-07-03 16:08:06 -07:00
ps3
ptp build some drivers only when compile-testing 2013-06-24 16:41:32 -07:00
pwm
rapidio rapidio: change endpoint device name format 2013-07-03 16:08:05 -07:00
regulator regulator: Updates for v3.11 2013-07-03 11:56:38 -07:00
remoteproc
reset
rpmsg
rtc drivers/rtc/rtc-stmp3xxx.c: check the return value from stmp_reset_block() 2013-07-09 10:33:25 -07:00
s390 SCSI misc on 20130702 2013-07-04 12:30:30 -07:00
sbus
scsi scsi_debug: fix do_device_access() with wrap around range 2013-07-09 10:33:30 -07:00
sfi
sh Merge branch 'pm-assorted' 2013-06-28 13:01:40 +02:00
sn
spi Merge branch 'akpm' (updates from Andrew Morton) 2013-07-03 17:12:13 -07:00
ssb
ssbi
staging Merge branch 'akpm' (updates from Andrew Morton) 2013-07-03 17:12:13 -07:00
target iscsi-target: Remove left over v3.10-rc debug printks 2013-06-20 16:47:41 -07:00
tc
thermal
tty Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-07-04 15:35:08 -07:00
uio uio: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT 2013-07-03 16:07:26 -07:00
usb Device tree updates for v3.11 2013-07-04 15:51:45 -07:00
uwb drivers: avoid format string in dev_set_name 2013-07-03 16:07:41 -07:00
vfio Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-07-04 10:29:23 -07:00
vhost
video Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
virt
virtio Merge branch 'akpm' (updates from Andrew Morton) 2013-07-03 17:12:13 -07:00
vlynq
vme vme: vme_tsi148.c: fix error return code in tsi148_probe() 2013-06-24 16:23:25 -07:00
w1 drivers/w1/slaves/w1_ds2408.c: add magic sequence to disable P0 test mode 2013-07-03 16:08:06 -07:00
watchdog Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-07-04 10:29:23 -07:00
xen Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-07-06 14:09:38 -07:00
zorro zorro: switch to fixed_size_llseek() 2013-06-29 12:57:28 +04:00
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