From e0bee4bcdc3238ebcae6e5960544b9e3d0a62abf Mon Sep 17 00:00:00 2001 From: Keguang Zhang Date: Sat, 31 Aug 2024 17:41:09 +0800 Subject: [PATCH] dmaengine: loongson1-apb-dma: Fix the build warning caused by the size of pdev_irqname drivers/dma/loongson1-apb-dma.c: In function 'ls1x_dma_probe': drivers/dma/loongson1-apb-dma.c:531:42: warning: '%d' directive writing between 1 and 8 bytes into a region of size 2 [-Wformat-overflow=] 531 | sprintf(pdev_irqname, "ch%d", id); | ^~ In function 'ls1x_dma_chan_probe', inlined from 'ls1x_dma_probe' at drivers/dma/loongson1-apb-dma.c:605:8: drivers/dma/loongson1-apb-dma.c:531:39: note: directive argument in the range [0, 19522579] 531 | sprintf(pdev_irqname, "ch%d", id); | ^~~~~~ drivers/dma/loongson1-apb-dma.c:531:17: note: 'sprintf' output between 4 and 11 bytes into a destination of size 4 531 | sprintf(pdev_irqname, "ch%d", id); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Fix the array size and use snprintf() instead of sprintf(). Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202408302108.xIR18jmD-lkp@intel.com/ Signed-off-by: Keguang Zhang Link: https://lore.kernel.org/r/20240831-fix-loongson1-dma-v1-1-91376d87695c@gmail.com Signed-off-by: Vinod Koul --- drivers/dma/loongson1-apb-dma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/loongson1-apb-dma.c b/drivers/dma/loongson1-apb-dma.c index ca43c67a8203..255fe7eca212 100644 --- a/drivers/dma/loongson1-apb-dma.c +++ b/drivers/dma/loongson1-apb-dma.c @@ -526,9 +526,9 @@ static int ls1x_dma_chan_probe(struct platform_device *pdev, for (id = 0; id < dma->nr_chans; id++) { struct ls1x_dma_chan *chan = &dma->chan[id]; - char pdev_irqname[4]; + char pdev_irqname[16]; - sprintf(pdev_irqname, "ch%d", id); + snprintf(pdev_irqname, sizeof(pdev_irqname), "ch%d", id); chan->irq = platform_get_irq_byname(pdev, pdev_irqname); if (chan->irq < 0) return dev_err_probe(&pdev->dev, chan->irq, -- 2.50.1