AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/dma/sh
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Yoshihiro Shimoda cf24aac386 dmaengine: rcar-dmac: Fix DMACHCLR handling if iommu is mapped 
The commit 20c169aceb ("dmaengine: rcar-dmac: clear pertinence
number of channels") forgets to clear the last channel by
DMACHCLR in rcar_dmac_init() (and doesn't need to clear the first
channel) if iommu is mapped to the device. So, this patch fixes it
by using "channels_mask" bitfield.

Note that the hardware and driver don't support more than 32 bits
in DMACHCLR register anyway, so this patch should reject more than
32 channels in rcar_dmac_parse_of().

Fixes: 20c169aceb ("dmaengine: rcar-dmac: clear pertinence number of channels")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1567424643-26629-1-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-09-04 11:35:58 +05:30
..
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: rcar-dmac: Fix DMACHCLR handling if iommu is mapped 2019-09-04 11:35:58 +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
usb-dmac.c dmaengine: sh: usb-dmac: Use [] to denote a flexible array member 2019-06-25 09:57:42 +05:30