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dmaengine: stm32-dma: Fix unsigned variable compared with zero

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Commit f4fd2ec08f: ("dmaengine: stm32-dma: use platform_get_irq()") used
unsigned variable irq to store the results and check later for negative
errors, so update the code to use signed variable for this

Fixes: f4fd2ec08f ("dmaengine: stm32-dma: use platform_get_irq()")
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Vinod Koul 2019-04-26 22:30:27 +05:30
parent f4fd2ec08f
commit c6504be539
1 changed files with 4 additions and 2 deletions
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6
drivers/dma/stm32-dma.c
View file

@ -1303,13 +1303,15 @@ static int stm32_dma_probe(struct platform_device *pdev)
for (i = 0; i < STM32_DMA_MAX_CHANNELS; i++) { for (i = 0; i < STM32_DMA_MAX_CHANNELS; i++) {
chan = &dmadev->chan[i]; chan = &dmadev->chan[i];
chan->irq = platform_get_irq(pdev, i); chan->irq = platform_get_irq(pdev, i);
if (chan->irq < 0) { ret = platform_get_irq(pdev, i);
ret = chan->irq; if (ret < 0) {
if (ret != -EPROBE_DEFER) if (ret != -EPROBE_DEFER)
dev_err(&pdev->dev, dev_err(&pdev->dev,
"No irq resource for chan %d\n", i); "No irq resource for chan %d\n", i);
goto err_unregister; goto err_unregister;
} }
chan->irq = ret;
ret = devm_request_irq(&pdev->dev, chan->irq, ret = devm_request_irq(&pdev->dev, chan->irq,
stm32_dma_chan_irq, 0, stm32_dma_chan_irq, 0,
dev_name(chan2dev(chan)), chan); dev_name(chan2dev(chan)), chan);