Achim Dahlhoff 6e7da74775 dmaengine: sh: rcar-dmac: Fix glitch in dmaengine_tx_status ... The tx_status poll in the rcar_dmac driver reads the status register which indicates which chunk is busy (DMACHCRB). Afterwards the point inside the chunk is read from DMATCRB. It is possible that the chunk has changed between the two reads. The result is a non-monotonous increase of the residue. Fix this by introducing a 'safe read' logic. Fixes: 73a47bd0da ("dmaengine: rcar-dmac: use TCRB instead of TCR for residue") Signed-off-by: Achim Dahlhoff <Achim.Dahlhoff@de.bosch.com> Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Cc: <stable@vger.kernel.org> # v4.16+ Signed-off-by: Vinod Koul <vkoul@kernel.org>		2019-04-23 10:45:34 +05:30
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Kconfig	dmaengine: sh: Remove R-Mobile APE6 support	2018-12-05 13:01:54 +05:30
Makefile	dmaengine: sh: Remove R-Mobile APE6 support	2018-12-05 13:01:54 +05:30
rcar-dmac.c	dmaengine: sh: rcar-dmac: Fix glitch in dmaengine_tx_status	2019-04-23 10:45:34 +05:30
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
sudmac.c	dmaengine: use SPDX identifier for Renesas drivers	2018-08-29 21:58:49 +05:30
usb-dmac.c	dmaengine: usb-dmac: Make DMAC system sleep callbacks explicit	2019-01-20 16:29:52 +05:30