* [PATCH] crypto: img-hash - Use dma_request_chan instead dma_request_slave_channel
@ 2019-12-17 7:33 Peter Ujfalusi
2019-12-27 10:37 ` Herbert Xu
0 siblings, 1 reply; 2+ messages in thread
From: Peter Ujfalusi @ 2019-12-17 7:33 UTC (permalink / raw)
To: herbert, davem; +Cc: vkoul, linux-crypto, linux-kernel
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>
---
drivers/crypto/img-hash.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/crypto/img-hash.c b/drivers/crypto/img-hash.c
index fe4cc8babe1c..25d5227f74a1 100644
--- a/drivers/crypto/img-hash.c
+++ b/drivers/crypto/img-hash.c
@@ -332,10 +332,10 @@ static int img_hash_dma_init(struct img_hash_dev *hdev)
struct dma_slave_config dma_conf;
int err = -EINVAL;
- hdev->dma_lch = dma_request_slave_channel(hdev->dev, "tx");
- if (!hdev->dma_lch) {
+ hdev->dma_lch = dma_request_chan(hdev->dev, "tx");
+ 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);
}
dma_conf.direction = DMA_MEM_TO_DEV;
dma_conf.dst_addr = hdev->bus_addr;
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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2019-12-17 7:33 [PATCH] crypto: img-hash - Use dma_request_chan instead dma_request_slave_channel Peter Ujfalusi
2019-12-27 10:37 ` Herbert Xu
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