From 20aaed22fec757114f9f6ca28e473e32ccb4b5c1 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 17 Dec 2019 09:35:06 +0200 Subject: [PATCH] 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 Signed-off-by: Herbert Xu --- drivers/crypto/stm32/stm32-hash.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c index cfc8e0e..167b80e 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); -- 2.7.4