linux-kernel - [PATCH] async_tx: fix checking of dma_wait_for_async

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Date:	Thu, 08 Nov 2012 11:03:16 +0100
From:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:	linux-kernel@...r.kernel.org
Cc:	Vinod Koul <vinod.koul@...el.com>, Dan Williams <djbw@...com>,
	Tomasz Figa <t.figa@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>
Subject: [PATCH] async_tx: fix checking of dma_wait_for_async_tx() return value

From: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: [PATCH] async_tx: fix checking of dma_wait_for_async_tx() return value

dma_wait_for_async_tx() can also return DMA_PAUSED (which
should be considered as error).

Cc: Vinod Koul <vinod.koul@...el.com>
Cc: Dan Williams <djbw@...com>
Cc: Tomasz Figa <t.figa@...sung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
---
 crypto/async_tx/async_tx.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

Index: b/crypto/async_tx/async_tx.c
===================================================================
--- a/crypto/async_tx/async_tx.c	2012-11-07 16:30:47.940875970 +0100
+++ b/crypto/async_tx/async_tx.c	2012-11-07 16:31:34.888875965 +0100
@@ -128,8 +128,8 @@ async_tx_channel_switch(struct dma_async
 		}
 		device->device_issue_pending(chan);
 	} else {
-		if (dma_wait_for_async_tx(depend_tx) == DMA_ERROR)
-			panic("%s: DMA_ERROR waiting for depend_tx\n",
+		if (dma_wait_for_async_tx(depend_tx) != DMA_SUCCESS)
+			panic("%s: DMA error waiting for depend_tx\n",
 			      __func__);
 		tx->tx_submit(tx);
 	}
@@ -280,8 +280,9 @@ void async_tx_quiesce(struct dma_async_t
 		 * we are referring to the correct operation
 		 */
 		BUG_ON(async_tx_test_ack(*tx));
-		if (dma_wait_for_async_tx(*tx) == DMA_ERROR)
-			panic("DMA_ERROR waiting for transaction\n");
+		if (dma_wait_for_async_tx(*tx) != DMA_SUCCESS)
+			panic("%s: DMA error waiting for transaction\n",
+			      __func__);
 		async_tx_ack(*tx);
 		*tx = NULL;
 	}
--
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