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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2015-03-09 16:48:48 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-03-09 18:11:13 +0000 |
| commit | 4d5ac1edfdd79aea31983333cb53dd5db29559f9 (patch) | |
| tree | d36ff072616b0352df81b3878444d22e28c10092 /drivers/spi/spi-dw-mid.c | |
| parent | f051fc8f117d95baaa3654d40e779c56c2c6d180 (diff) | |
| download | lwn-4d5ac1edfdd79aea31983333cb53dd5db29559f9.tar.gz lwn-4d5ac1edfdd79aea31983333cb53dd5db29559f9.zip | |
spi: dw-mid: clear ongoing DMA transfers on timeout
This patch shuts up any ongoing DMA transfer in case of error.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-dw-mid.c')
| -rw-r--r-- | drivers/spi/spi-dw-mid.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c index 3729cdd84e94..e614190daef6 100644 --- a/drivers/spi/spi-dw-mid.c +++ b/drivers/spi/spi-dw-mid.c @@ -270,11 +270,24 @@ static int mid_spi_dma_transfer(struct dw_spi *dws) return 0; } +static void mid_spi_dma_stop(struct dw_spi *dws) +{ + if (test_bit(TX_BUSY, &dws->dma_chan_busy)) { + dmaengine_terminate_all(dws->txchan); + clear_bit(TX_BUSY, &dws->dma_chan_busy); + } + if (test_bit(RX_BUSY, &dws->dma_chan_busy)) { + dmaengine_terminate_all(dws->rxchan); + clear_bit(RX_BUSY, &dws->dma_chan_busy); + } +} + static struct dw_spi_dma_ops mid_dma_ops = { .dma_init = mid_spi_dma_init, .dma_exit = mid_spi_dma_exit, .dma_setup = mid_spi_dma_setup, .dma_transfer = mid_spi_dma_transfer, + .dma_stop = mid_spi_dma_stop, }; #endif |