Messages in this thread | | | Subject | Re: crypto: ccp: use dma_mapping_error to check map error | From | Gary R Hook <> | Date | Tue, 8 Aug 2017 10:26:50 -0500 |
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On 08/08/2017 08:42 AM, Pan Bian wrote: > 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>
> --- > drivers/crypto/ccp/ccp-ops.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/crypto/ccp/ccp-ops.c b/drivers/crypto/ccp/ccp-ops.c > index c0dfdac..ca83d19 100644 > --- a/drivers/crypto/ccp/ccp-ops.c > +++ b/drivers/crypto/ccp/ccp-ops.c > @@ -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; >
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