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crypto: ccp - use dma_mapping_error to check map error

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The return value of dma_map_single() should be checked by
dma_mapping_error(). However, in function ccp_init_dm_workarea(), its
return value is checked against NULL, which could result in failures.

Signed-off-by: Pan Bian <[email protected]>
Acked-by: Gary R Hook <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
This commit is contained in:
Pan Bian authored and Herbert Xu committed 2017-08-17 16:53:33 +08:00
1 parent dea632cadd
commit ef4064bb3f
1 file changed
+1 -1
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drivers/crypto/ccp/ccp-ops.c
+1 -1
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@@ -168,7 +168,7 @@ static int ccp_init_dm_workarea(struct ccp_dm_workarea *wa,
wa->dma.address = dma_map_single(wa->dev, wa->address, len,
dir);
if (!wa->dma.address)
if (dma_mapping_error(wa->dev, wa->dma.address))
return -ENOMEM;
wa->dma.length = len;