tree 2a498e6522720261b2bce4adbbd045e23ca8cd8c
parent 9f14538ecd1a210eff244a0a2281f6744fe4a59d
author Andy Shevchenko <andriy.shevchenko@linux.intel.com> 1425912527 +0200
committer Mark Brown <broonie@kernel.org> 1425924673 +0000

spi: dw-mid: take care of FIFO overrun/underrun when do DMA

In according to documentation SPI in DMA mode may encounter underrun/overrun
failures in rare cases. When such failure occurs, an error recovery protocol is
expected to be implemented in the device driver so that the failed transaction
can be restarted.

This patch enables FIFO overrun / underrun interrupts in DMA case and adds a
handler for that.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>