Commit-ID: ad7cc3c0c57d77b442db323056354d0e49833569 Gitweb: http://git.kernel.org/tip/ad7cc3c0c57d77b442db323056354d0e49833569 Author: Hanjun Guo <[email protected]> AuthorDate: Fri, 12 May 2017 11:55:27 +0800 Committer: Thomas Gleixner <[email protected]> CommitDate: Fri, 12 May 2017 10:25:37 +0200
irqchip/mbigen: Fix potential NULL dereferencing platform_get_resource() may return NULL, add proper check to avoid potential NULL dereferencing. Signed-off-by: Hanjun Guo <[email protected]> Acked-by: Marc Zyngier <[email protected]> Cc: Kefeng Wang <[email protected]> Cc: [email protected] Cc: Wei Yongjun <[email protected]> Cc: MaJun <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]> --- drivers/irqchip/irq-mbigen.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/irqchip/irq-mbigen.c b/drivers/irqchip/irq-mbigen.c index 0f5e66e..2fa1e45 100644 --- a/drivers/irqchip/irq-mbigen.c +++ b/drivers/irqchip/irq-mbigen.c @@ -337,6 +337,9 @@ static int mbigen_device_probe(struct platform_device *pdev) mgn_chip->pdev = pdev; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; + mgn_chip->base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); if (!mgn_chip->base) {
