Re: [PATCH] dma: imx-dma: fix signedness bug
From: Sascha Hauer
Date: Wed Oct 20 2010 - 02:37:28 EST
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@xxxxxxxxx>
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
Here's an updated patch fixing both issues.
drivers/dma/imx-dma.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index 346be62..f629e49 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);
--
1.7.2.3
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