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| author |   Peter Ujfalusi <peter.ujfalusi@ti.com> | 2019-12-17 09:35:06 +0200 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2019-12-27 18:18:03 +0800 |
| commit | 20aaed22fec757114f9f6ca28e473e32ccb4b5c1 (patch) | |
| tree | 8c4938360283ec4d87bca38848079759b12c67a0 /drivers/crypto/stm32 | |
| parent | crypto: img-hash - Use dma_request_chan instead dma_request_slave_channel (diff) | |
| download | linux-dev-20aaed22fec757114f9f6ca28e473e32ccb4b5c1.tar.xz linux-dev-20aaed22fec757114f9f6ca28e473e32ccb4b5c1.zip | |
crypto: stm32/hash - Use dma_request_chan() instead dma_request_slave_channel()
dma_request_slave_channel() is a wrapper on top of dma_request_chan()
eating up the error code.
By using dma_request_chan() directly the driver can support deferred
probing against DMA.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/stm32')
| -rw-r--r-- | drivers/crypto/stm32/stm32-hash.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c index cfc8e0e37bee..167b80eec437 100644 --- a/drivers/crypto/stm32/stm32-hash.c +++ b/drivers/crypto/stm32/stm32-hash.c @@ -518,10 +518,10 @@ static int stm32_hash_dma_init(struct stm32_hash_dev *hdev) dma_conf.dst_maxburst = hdev->dma_maxburst; dma_conf.device_fc = false; - hdev->dma_lch = dma_request_slave_channel(hdev->dev, "in"); - if (!hdev->dma_lch) { + hdev->dma_lch = dma_request_chan(hdev->dev, "in"); + if (IS_ERR(hdev->dma_lch)) { dev_err(hdev->dev, "Couldn't acquire a slave DMA channel.\n"); - return -EBUSY; + return PTR_ERR(hdev->dma_lch); } err = dmaengine_slave_config(hdev->dma_lch, &dma_conf); |