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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2019-12-17 09:35:06 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2019-12-27 18:18:03 +0800
commit20aaed22fec757114f9f6ca28e473e32ccb4b5c1 (patch)
tree8c4938360283ec4d87bca38848079759b12c67a0 /drivers
parent8004865c2e7bc9574d5ddfc99fe2a90eca840b17 (diff)
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')
-rw-r--r--drivers/crypto/stm32/stm32-hash.c6
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);