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Date: Mon, 30 Jan 2017 10:18:18 +0530 From: Shailendra Verma <shailendra.v@...sung.com> To: Ulf Hansson <ulf.hansson@...aro.org>, Fabio Estevam <fabio.estevam@....com>, Marek Vasut <marex@...x.de>, linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org, p.shailesh@...sung.com, ashish.kalra@...sung.com, Shailendra Verma <shailendra.v@...sung.com>, Shailendra Verma <shailendra.capricorn@...il.com> Subject: [PATCH] Mmc: host - Fix possible NULL derefrence. of_match_device could return NULL, and so can cause a NULL pointer dereference later. Signed-off-by: Shailendra Verma <shailendra.v@...sung.com> --- drivers/mmc/host/mxs-mmc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 44ecebd..d12a5b7 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -581,6 +581,11 @@ static int mxs_mmc_probe(struct platform_device *pdev) struct regulator *reg_vmmc; struct mxs_ssp *ssp; + if (!of_id) { + dev_err(&pdev->dev, "Error: No device match found\n"); + return -ENODEV; + } + irq_err = platform_get_irq(pdev, 0); if (irq_err < 0) return irq_err; -- 1.7.9.5
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