Commit ef4064bb authored Aug 08, 2017 by Pan Bian Committed by Herbert Xu Aug 17, 2017

crypto: ccp - use dma_mapping_error to check map error



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 <bianpan2016@163.com>
Acked-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent dea632ca

drivers/crypto/ccp/ccp-ops.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -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,		wa->dma.address = dma_map_single(wa->dev, wa->address, len,
	dir);		dir);
	if (!wa->dma.address)		if (dma_mapping_error(wa->dev, wa->dma.address))
	return -ENOMEM;		return -ENOMEM;

	wa->dma.length = len;		wa->dma.length = len;