From c5c7502e960d9128eae1a5663fb62506d8685ac3 Mon Sep 17 00:00:00 2001 From: Yang Yingliang Date: Fri, 29 Jul 2022 10:41:34 +0800 Subject: [PATCH] video: fbdev: imxfb: fix return value check in imxfb_probe() If devm_ioremap_resource() fails, it never return NULL, replace NULL test with IS_ERR(). Fixes: b083c22d5114 ("video: fbdev: imxfb: Convert request_mem_region + ioremap to devm_ioremap_resource") Signed-off-by: Yang Yingliang Signed-off-by: Helge Deller --- drivers/video/fbdev/imxfb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/video/fbdev/imxfb.c b/drivers/video/fbdev/imxfb.c index c48477893dd063..d97d7456d15a0b 100644 --- a/drivers/video/fbdev/imxfb.c +++ b/drivers/video/fbdev/imxfb.c @@ -971,9 +971,9 @@ static int imxfb_probe(struct platform_device *pdev) } fbi->regs = devm_ioremap_resource(&pdev->dev, res); - if (fbi->regs == NULL) { + if (IS_ERR(fbi->regs)) { dev_err(&pdev->dev, "Cannot map frame buffer registers\n"); - ret = -ENOMEM; + ret = PTR_ERR(fbi->regs); goto failed_ioremap; }