From 8341db7b05b688e8e5a93acd0e80b40be409d037 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Thu, 6 Mar 2014 22:44:41 -0800 Subject: [PATCH 027/182] pinctrl: msm: Check for ngpios > MAX_NR_GPIO Fail the probe and print a warning if SoC specific drivers have more GPIOs than there can be accounted for in the static bitmaps. This should avoid silent corruption/failures in the future. Signed-off-by: Stephen Boyd Acked-by: Bjorn Andersson Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-msm.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/pinctrl/pinctrl-msm.c b/drivers/pinctrl/pinctrl-msm.c index e61b30a..90ac995 100644 --- a/drivers/pinctrl/pinctrl-msm.c +++ b/drivers/pinctrl/pinctrl-msm.c @@ -870,10 +870,14 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl) int ret; int i; int r; + unsigned ngpio = pctrl->soc->ngpios; + + if (WARN_ON(ngpio > MAX_NR_GPIO)) + return -EINVAL; chip = &pctrl->chip; chip->base = 0; - chip->ngpio = pctrl->soc->ngpios; + chip->ngpio = ngpio; chip->label = dev_name(pctrl->dev); chip->dev = pctrl->dev; chip->owner = THIS_MODULE; -- 1.7.10.4