Yoshihiro Shimoda 684a5568df dmaengine: sh: usb-dmac: set tx_result parameters ... [ Upstream commit 466257d996 ] A client driver (renesas_usbhs) assumed that dmaengine_tx_status() could return the residue even if the transfer was completed. However, this was not correct usage [1] and this caused to break getting the residue after the commit 24461d9792 ("dmaengine: virt-dma: Fix access after free in vchan_complete()") actually. So, this is possible to get wrong received size if the usb controller gets a short packet. For example, g_zero driver causes "bad OUT byte" errors. To use the tx_result from the renesas_usbhs driver when the transfer is completed, set the tx_result parameters. Notes that the renesas_usbhs driver needs to update for it. [1] https://lore.kernel.org/dmaengine/20200616165550.GP2324254@vkoul-mobl/ Reported-by: Hien Dang <hien.dang.eb@renesas.com> Fixes: 24461d9792 ("dmaengine: virt-dma: Fix access after free in vchan_complete()") Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/1592482053-19433-1-git-send-email-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-07-22 09:33:00 +02:00
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Kconfig	dmaengine: sudmac: remove unused driver	2019-05-21 09:52:50 +05:30
Makefile	dmaengine: sudmac: remove unused driver	2019-05-21 09:52:50 +05:30
rcar-dmac.c	dmaengine updates for v5.4-rc1	2019-09-17 19:04:40 -07:00
shdma-arm.h	dmaengine: use SPDX identifier for Renesas drivers	2018-08-29 21:58:49 +05:30
shdma-base.c	dmaengine: use SPDX identifier for Renesas drivers	2018-08-29 21:58:49 +05:30
shdma-of.c	dmaengine: use SPDX identifier for Renesas drivers	2018-08-29 21:58:49 +05:30
shdma.h	dmaengine: sh: Remove R-Mobile APE6 support	2018-12-05 13:01:54 +05:30
shdmac.c	dmaengine: sh: Remove R-Mobile APE6 support	2018-12-05 13:01:54 +05:30
usb-dmac.c	dmaengine: sh: usb-dmac: set tx_result parameters	2020-07-22 09:33:00 +02:00