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| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2019-09-02 14:44:03 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2019-09-04 09:05:58 +0300 |
| commit | cf24aac38698bfa1d021afd3883df3c4c65143a4 (patch) | |
| tree | a62efbcfd0a750f1dd8db94426410bd2f50543a0 /drivers/md/dm-integrity.c | |
| parent | 689379c2f383b1fdfdff03e84cf659daf62f2088 (diff) | |
| download | linux-cf24aac38698bfa1d021afd3883df3c4c65143a4.tar.xz | |
dmaengine: rcar-dmac: Fix DMACHCLR handling if iommu is mapped
The commit 20c169aceb45 ("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: 20c169aceb459575 ("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>
Diffstat (limited to 'drivers/md/dm-integrity.c')
0 files changed, 0 insertions, 0 deletions