From b65be6355183f6cb82518d02a4067239f6175558 Mon Sep 17 00:00:00 2001 From: Fabien Parent Date: Wed, 3 Apr 2019 21:30:50 +0200 Subject: [PATCH] mmc: mtk-sd: check for valid optional memory resource 'top_base' memory region is optional. Check that the resource is valid before using it. This avoid getting a "invalid resource" error message printed by the kernel. Signed-off-by: Fabien Parent Signed-off-by: Ulf Hansson --- drivers/mmc/host/mtk-sd.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index bd731bde4b75..0798f0ba6d34 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -2134,9 +2134,11 @@ static int msdc_drv_probe(struct platform_device *pdev) } res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - host->top_base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(host->top_base)) - host->top_base = NULL; + if (res) { + host->top_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(host->top_base)) + host->top_base = NULL; + } ret = mmc_regulator_get_supply(mmc); if (ret) -- 2.30.2