From: YueHaibing <yuehaibing@huawei.com>
Date: Fri, 28 Dec 2018 06:10:33 +0000 (+0000)
Subject: crypto: ux500 - catch dma submission error
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=be8a54d367bfef7a5b354975f878441383ce9993;p=linux.git

crypto: ux500 - catch dma submission error

Test cookie return by dmaengine_submit() and return error if any.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/ux500/cryp/cryp_core.c b/drivers/crypto/ux500/cryp/cryp_core.c
index a92a66b1ff46e..db94f89d8d113 100644
--- a/drivers/crypto/ux500/cryp/cryp_core.c
+++ b/drivers/crypto/ux500/cryp/cryp_core.c
@@ -595,6 +595,12 @@ static int cryp_set_dma_transfer(struct cryp_ctx *ctx,
 	}
 
 	cookie = dmaengine_submit(desc);
+	if (dma_submit_error(cookie)) {
+		dev_dbg(ctx->device->dev, "[%s]: DMA submission failed\n",
+			__func__);
+		return cookie;
+	}
+
 	dma_async_issue_pending(channel);
 
 	return 0;