linux-kernel - [PATCH] dm1105: fix the misuse of pci_dma_mapping

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Date:	Fri, 24 Oct 2008 15:13:23 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	mchehab@...hat.com
Cc:	video4linux-list@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH] dm1105: fix the misuse of pci_dma_mapping_error

pci_dma_mapping_error can't be used for pci_alloc_consistent
(pci_dma_mapping_error is for dma_map_single and dma_map_page).
pci_alloc_consistent returns NULL if the allocation fails.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
---
 drivers/media/dvb/dm1105/dm1105.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/media/dvb/dm1105/dm1105.c b/drivers/media/dvb/dm1105/dm1105.c
index 14e627e..ab9282e 100644
--- a/drivers/media/dvb/dm1105/dm1105.c
+++ b/drivers/media/dvb/dm1105/dm1105.c
@@ -368,7 +368,7 @@ static int __devinit dm1105dvb_dma_map(struct dm1105dvb *dm1105dvb)
 {
 	dm1105dvb->ts_buf = pci_alloc_consistent(dm1105dvb->pdev, 6*DM1105_DMA_BYTES, &dm1105dvb->dma_addr);
 
-	return pci_dma_mapping_error(dm1105dvb->pdev, dm1105dvb->dma_addr);
+	return !dm1105dvb->ts_buf;
 }
 
 static void dm1105dvb_dma_unmap(struct dm1105dvb *dm1105dvb)
-- 
1.5.5.GIT

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