crypto: img-hash - Fix null pointer exception
Sporadic null pointer exceptions came from here. Fix them. Signed-off-by: Will Thomas <will.thomas@imgtec.com> Reviewed-by: James Hartley <james.hartley@imgtec.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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@ -361,7 +361,7 @@ static void img_hash_dma_task(unsigned long d)
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size_t nbytes, bleft, wsend, len, tbc;
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size_t nbytes, bleft, wsend, len, tbc;
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struct scatterlist tsg;
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struct scatterlist tsg;
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if (!ctx->sg)
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if (!hdev->req || !ctx->sg)
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return;
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return;
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addr = sg_virt(ctx->sg);
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addr = sg_virt(ctx->sg);
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