From: Colin Ian King Date: Wed, 24 Feb 2016 17:32:50 +0000 (+0000) Subject: pinctrl: lpc18xx: ensure ngroups is initialized at correct place X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5e9a207547079a23c3d4ecb4bad050ba8acc3f59;p=linux-beck.git pinctrl: lpc18xx: ensure ngroups is initialized at correct place The initialization of ngroups is occurring at the end of the first iteration of the outer loop, which means that the assignment pins[ngroups++] = i is potentially indexing into a region outside of array pins because ngroups is not initialized. Instead, initialize ngroups in the inner loop before the first inner loop iteration. Signed-off-by: Colin Ian King Reviewed-by: Joachim Eastwood Signed-off-by: Linus Walleij --- diff --git a/drivers/pinctrl/pinctrl-lpc18xx.c b/drivers/pinctrl/pinctrl-lpc18xx.c index f0bebbe0682b..ed1cfa7e43dd 100644 --- a/drivers/pinctrl/pinctrl-lpc18xx.c +++ b/drivers/pinctrl/pinctrl-lpc18xx.c @@ -1170,9 +1170,8 @@ static int lpc18xx_create_group_func_map(struct device *dev, u16 pins[ARRAY_SIZE(lpc18xx_pins)]; int func, ngroups, i; - for (func = 0; func < FUNC_MAX; ngroups = 0, func++) { - - for (i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) { + for (func = 0; func < FUNC_MAX; func++) { + for (ngroups = 0, i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) { if (lpc18xx_valid_pin_function(i, func)) pins[ngroups++] = i; }