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23 October 2021, 00:29:24 UTC
Revision ee1cdcdae59563535485a5f56ee72c894ab7d7ad authored by Andy Shevchenko on 10 February 2016, 13:59:42 UTC, committed by Vinod Koul on 15 February 2016, 16:49:32 UTC 
dmaengine: dw: disable BLOCK IRQs for non-cyclic xfer
 
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@linux.intel.com>
Acked-by: Mans Rullgard <mans@mansr.com>
Tested-by: Mans Rullgard <mans@mansr.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
1 parent 4ac31d1
History
Tip revision: ee1cdcdae59563535485a5f56ee72c894ab7d7ad authored by Andy Shevchenko on 10 February 2016, 13:59:42 UTC
dmaengine: dw: disable BLOCK IRQs for non-cyclic xfer
Tip revision: ee1cdcd
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