diff options
| author | Krzysztof Kozlowski <krzk@kernel.org> | 2020-09-01 18:27:03 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-09-08 20:19:23 +0300 |
| commit | 687a2e76186dcfa42f22c14b655c3fb159839e79 (patch) | |
| tree | 6d5c535a68814a3f6e26f352352f82ee2eb06cfe /drivers/spi | |
| parent | 2abaad678575acd54e9939e1174becd82ecc884b (diff) | |
| download | linux-687a2e76186dcfa42f22c14b655c3fb159839e79.tar.xz | |
spi: sprd: Release DMA channel also on probe deferral
If dma_request_chan() for TX channel fails with EPROBE_DEFER, the RX
channel would not be released and on next re-probe it would be requested
second time.
Fixes: 386119bc7be9 ("spi: sprd: spi: sprd: Add DMA mode support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Chunyan Zhang <zhang.lyra@gmail.com>
Link: https://lore.kernel.org/r/20200901152713.18629-1-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-sprd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/spi/spi-sprd.c b/drivers/spi/spi-sprd.c index 6678f1cbc566..0443fec3a6ab 100644 --- a/drivers/spi/spi-sprd.c +++ b/drivers/spi/spi-sprd.c @@ -563,11 +563,11 @@ static int sprd_spi_dma_request(struct sprd_spi *ss) ss->dma.dma_chan[SPRD_SPI_TX] = dma_request_chan(ss->dev, "tx_chn"); if (IS_ERR_OR_NULL(ss->dma.dma_chan[SPRD_SPI_TX])) { + dma_release_channel(ss->dma.dma_chan[SPRD_SPI_RX]); if (PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]) == -EPROBE_DEFER) return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]); dev_err(ss->dev, "request TX DMA channel failed!\n"); - dma_release_channel(ss->dma.dma_chan[SPRD_SPI_RX]); return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]); } |