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Subject[PATCH v2] crypto: ccree - Remove a useless dma_supported() call
Date
There is no point in calling dma_supported() before calling
dma_set_coherent_mask(). This function already calls dma_supported() and
returns an error (-EIO) if it fails.

So remove the superfluous dma_supported() call.

Moreover, setting a larger DMA mask will never fail when setting a smaller
one will succeed, so the whole "while" loop can be removed as well. (see
[1])

While at it, fix the name of the function reported in a dev_err().

[1]: https://lore.kernel.org/all/YteQ6Vx2C03UtCkG@infradead.org/

Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
drivers/crypto/ccree/cc_driver.c | 13 +++----------
1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/crypto/ccree/cc_driver.c b/drivers/crypto/ccree/cc_driver.c
index 7d1bee86d581..cadead18b59e 100644
--- a/drivers/crypto/ccree/cc_driver.c
+++ b/drivers/crypto/ccree/cc_driver.c
@@ -372,17 +372,10 @@ static int init_cc_resources(struct platform_device *plat_dev)
dev->dma_mask = &dev->coherent_dma_mask;

dma_mask = DMA_BIT_MASK(DMA_BIT_MASK_LEN);
- while (dma_mask > 0x7fffffffUL) {
- if (dma_supported(dev, dma_mask)) {
- rc = dma_set_coherent_mask(dev, dma_mask);
- if (!rc)
- break;
- }
- dma_mask >>= 1;
- }
-
+ rc = dma_set_coherent_mask(dev, dma_mask);
if (rc) {
- dev_err(dev, "Failed in dma_set_mask, mask=%llx\n", dma_mask);
+ dev_err(dev, "Failed in dma_set_coherent_mask, mask=%llx\n",
+ dma_mask);
return rc;
}

--
2.34.1
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