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authorSascha Hauer <s.hauer@pengutronix.de>2010-10-20 08:37:19 +0200
committerDan Williams <dan.j.williams@intel.com>2010-10-22 11:08:27 -0700
commit8267f16e8b67ea272f37f7072933dc0d3839693d (patch)
tree672a25b5bb2db8c1a440d0221d1069231071f6aa /drivers/dma/imx-dma.c
parent42e55736f7efd7658f8826a5f441c3ccb962db74 (diff)
downloadlinux-8267f16e8b67ea272f37f7072933dc0d3839693d.tar.bz2
dma: imx-dma: fix signedness bug
mxdmac->channel was unsigned, so check (imxdmac->channel < 0) for failed imx_dma_request_by_prio() made no sence. Explicitly check signed values. Also, fix uninitialzed use of ret. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/imx-dma.c')
-rw-r--r--drivers/dma/imx-dma.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index 346be6218058..f629e4961af5 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -335,8 +335,10 @@ static int __init imxdma_probe(struct platform_device *pdev)
imxdmac->imxdma_channel = imx_dma_request_by_prio("dmaengine",
DMA_PRIO_MEDIUM);
- if (imxdmac->channel < 0)
+ if ((int)imxdmac->channel < 0) {
+ ret = -ENODEV;
goto err_init;
+ }
imx_dma_setup_handlers(imxdmac->imxdma_channel,
imxdma_irq_handler, imxdma_err_handler, imxdmac);