On Wed, Aug 28, 2019 at 08:13:54PM +0900, Yoshihiro Shimoda wrote:
> The commit 20c169aceb45 ("dmaengine: rcar-dmac: clear pertinence
> number of channels") always set the DMACHCLR bit 0 to 1, but if
> iommu is mapped to the device, this driver doesn't need to clear it.
> So, this patch takes care of it by using "channels_mask" bitfield.
>
> Note that, this patch doesn't have a "Fixes:" tag because the driver
> doesn't manage the channel 0 anyway so that the behavior of
> the channel is not changed.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Reviewed-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
