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crypto: caam - Remove GFP_DMA and add DMA alignment padding

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GFP_DMA does not guarantee that the returned memory is aligned
for DMA.  It should be removed where it is superfluous.

However, kmalloc may start returning DMA-unaligned memory in future
so fix this by adding the alignment by hand.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu
2022-12-30 13:21:38 +08:00
parent c27b2d2012
commit 199354d7fb
13 changed files with 111 additions and 71 deletions
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drivers/crypto/caam/ctrl.c
+2 -2
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@@ -199,7 +199,7 @@ static int deinstantiate_rng(struct device *ctrldev, int state_handle_mask)
u32 *desc, status;
int sh_idx, ret = 0;
desc = kmalloc(CAAM_CMD_SZ * 3, GFP_KERNEL | GFP_DMA);
desc = kmalloc(CAAM_CMD_SZ * 3, GFP_KERNEL);
if (!desc)
return -ENOMEM;
@@ -276,7 +276,7 @@ static int instantiate_rng(struct device *ctrldev, int state_handle_mask,
int ret = 0, sh_idx;
ctrl = (struct caam_ctrl __iomem *)ctrlpriv->ctrl;
desc = kmalloc(CAAM_CMD_SZ * 7, GFP_KERNEL | GFP_DMA);
desc = kmalloc(CAAM_CMD_SZ * 7, GFP_KERNEL);
if (!desc)
return -ENOMEM;