From: Sergei Shtylyov Date: Sun, 16 Jul 2017 17:52:20 +0000 (+0300) Subject: power: supply: act8945a_charger: fix of_irq_get() error check X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=648b8eba20d0bdce9de41df97677e70aa53693ea;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git power: supply: act8945a_charger: fix of_irq_get() error check of_irq_get() may return any negative error number as well as 0 on failure, while the driver only checks for -EPROBE_DEFER, blithely continuing with the call to devm_request_irq() -- that function expects *unsigned int*, so would probably fail anyway when a large IRQ number resulting from a conversion of a negative error number is passed to it... This, however, is incorrect behavior -- error number is not IRQ number. Check for 'irq <= 0' instead and return -ENXIO from probe if of_irq_get() returned 0. Fixes: a09209acd6a8 ("power: supply: act8945a_charger: Add status change update support") Signed-off-by: Sergei Shtylyov Signed-off-by: Sebastian Reichel --- diff --git a/drivers/power/supply/act8945a_charger.c b/drivers/power/supply/act8945a_charger.c index d1eb2e359532..8e117b31ba79 100644 --- a/drivers/power/supply/act8945a_charger.c +++ b/drivers/power/supply/act8945a_charger.c @@ -596,9 +596,9 @@ static int act8945a_charger_probe(struct platform_device *pdev) return ret; irq = of_irq_get(pdev->dev.of_node, 0); - if (irq == -EPROBE_DEFER) { + if (irq <= 0) { dev_err(&pdev->dev, "failed to find IRQ number\n"); - return -EPROBE_DEFER; + return irq ?: -ENXIO; } ret = devm_request_irq(&pdev->dev, irq, act8945a_status_changed,