mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-15 23:25:07 +00:00
Code Issues Releases Wiki Activity
linux-stable/arch/arc
History
Eugeniy Paltsev 4c612add7b ARC: dma [non IOC]: fix arc_dma_sync_single_for_(device|cpu) 
ARC backend for dma_sync_single_for_(device|cpu) was broken as it was
not honoring the @dir argument and simply forcing it based on the call:
 - arc_dma_sync_single_for_device(dir) assumed DMA_TO_DEVICE (cache wback)
 - arc_dma_sync_single_for_cpu(dir) assumed DMA_FROM_DEVICE (cache inv)

This is not true given the DMA API programming model and has been
discussed here [1] in some detail.

Interestingly while the deficiency has been there forever, it only started
showing up after 4.17 dma common ops rework, commit a8eb92d02d
("arc: fix arc_dma_{map,unmap}_page") which wired up these calls under the
more commonly used dma_map_page API triggering the issue.

[1]: https://lkml.org/lkml/2018/5/18/979
Fixes: commit a8eb92d02d ("arc: fix arc_dma_{map,unmap}_page")
Cc: stable@kernel.org # v4.17+
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
[vgupta: reworked changelog]
2018-07-27 13:12:40 -07:00
..
boot kbuild: mark $(targets) as .SECONDARY and remove .PRECIOUS markers 2018-04-07 19:04:02 +09:00
configs ARC: configs: Remove CONFIG_INITRAMFS_SOURCE from defconfigs 2018-07-09 11:25:45 -07:00
include ARC fixes for 4.18-rc6 2018-07-20 11:33:22 -07:00
kernel ARC: Improve cmpxchg syscall implementation 2018-07-09 11:22:05 -07:00
lib ARC: dw2 unwind: enable cfi pseudo ops in string lib 2016-09-30 14:48:22 -07:00
mm ARC: dma [non IOC]: fix arc_dma_sync_single_for_(device|cpu) 2018-07-27 13:12:40 -07:00
oprofile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
plat-axs10x ARC: [plat-axs103] refactor the quad core DT quirk code 2017-12-20 12:41:45 -08:00
plat-eznps License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
plat-hsdk ARCv2: [plat-hsdk]: Save accl reg pair by default 2018-07-19 10:36:45 -07:00
plat-sim ARC: [plat-sim] Include this platform unconditionally 2017-08-04 13:49:47 +05:30
plat-tb10x arc: select GPIOLIB directly 2016-04-26 14:07:59 +02:00
Kbuild
Kconfig ARC fixes for 4.18-rc6 2018-07-20 11:33:22 -07:00
Kconfig.debug License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile ARC: Explicitly add -mmedium-calls to CFLAGS 2018-06-13 17:46:34 -07:00