On 10-02-16, 15:59, Andy Shevchenko wrote:
> The commit 2895b2cad6e7 ("dmaengine: dw: fix cyclic transfer callbacks")
> re-enabled BLOCK interrupts with regard to make cyclic transfers work. However,
> this change becomes a regression for non-cyclic transfers as interrupt counters
> under stress test had been grown enormously (approximately per 4-5 bytes in the
> UART loop back test).
>
> Taking into consideration above enable BLOCK interrupts if and only if channel
> is programmed to perform cyclic transfer.
>
> Fixes: 2895b2cad6e7 ("dmaengine: dw: fix cyclic transfer callbacks")
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Cc: Mans Rullgard <mans@xxxxxxxxx>
> Cc: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx>
> ---
> drivers/dma/dw/core.c | 15 ++++++++++-----
> 1 file changed, 10 insertions(+), 5 deletions(-)
Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
--
viresh
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