On 05-07-20, 14:56, Andy Shevchenko wrote:
> In some cases DMA can be used only with a consumer which does runtime power
> management and on the platforms, that have DMA auto power gating logic
> (see comments in the drivers/acpi/acpi_lpss.c), may result in DMA losing
> its context. Simple mitigation of this issue is to initialize channel
> each time the consumer initiates a transfer.
>
> Fixes: cfdf5b6cc598 ("dw_dmac: add support for Lynxpoint DMA controllers")
> BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=206403
> Reported-by: Tsuchiya Yuto <kitakar@xxxxxxxxx>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> ---
> drivers/dma/dw/core.c | 12 ------------
> 1 file changed, 12 deletions(-)
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
--
viresh
