From: Dan Carpenter <dan.carpenter@oracle.com>
To: kernel-janitors@vger.kernel.org
Subject: [patch 2/2] dmaengine: xgene: devm_ioremap() returns NULL on error
Date: Thu, 09 Apr 2015 09:03:31 +0000 [thread overview]
Message-ID: <20150409090331.GC17605@mwanda> (raw)
The code here is checking for IS_ERR() but devm_ioremap() returns NULL
on error and not an error pointer.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/dma/xgene-dma.c b/drivers/dma/xgene-dma.c
index 06d4042..8a36946 100755
--- a/drivers/dma/xgene-dma.c
+++ b/drivers/dma/xgene-dma.c
@@ -1895,9 +1895,9 @@ static int xgene_dma_get_resources(struct platform_device *pdev,
pdma->csr_dma = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
- if (IS_ERR(pdma->csr_dma)) {
+ if (!pdma->csr_dma) {
dev_err(&pdev->dev, "Failed to ioremap csr region");
- return PTR_ERR(pdma->csr_dma);
+ return -ENOMEM;
}
/* Get DMA ring csr region */
@@ -1909,9 +1909,9 @@ static int xgene_dma_get_resources(struct platform_device *pdev,
pdma->csr_ring = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
- if (IS_ERR(pdma->csr_ring)) {
+ if (!pdma->csr_ring) {
dev_err(&pdev->dev, "Failed to ioremap ring csr region");
- return PTR_ERR(pdma->csr_ring);
+ return -ENOMEM;
}
/* Get DMA ring cmd csr region */
@@ -1923,9 +1923,9 @@ static int xgene_dma_get_resources(struct platform_device *pdev,
pdma->csr_ring_cmd = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
- if (IS_ERR(pdma->csr_ring_cmd)) {
+ if (!pdma->csr_ring_cmd) {
dev_err(&pdev->dev, "Failed to ioremap ring cmd csr region");
- return PTR_ERR(pdma->csr_ring_cmd);
+ return -ENOMEM;
}
/* Get efuse csr region */
@@ -1937,9 +1937,9 @@ static int xgene_dma_get_resources(struct platform_device *pdev,
pdma->csr_efuse = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
- if (IS_ERR(pdma->csr_efuse)) {
+ if (!pdma->csr_efuse) {
dev_err(&pdev->dev, "Failed to ioremap efuse csr region");
- return PTR_ERR(pdma->csr_efuse);
+ return -ENOMEM;
}
/* Get DMA error interrupt */
reply other threads:[~2015-04-09 9:03 UTC|newest]
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