From 1b63d3a80c412d16198bcb6a71c07786f6ffa36c Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Wed, 15 Nov 2023 14:49:55 +0000 Subject: [PATCH 0827/1085] pinctrl: bcm2712: Fix for sparse GPIOs BCM2712D0's sparse GPIO map revealed that it is not safe to treat group_selector as the GPIO number - it is an index into the array of pinctrl_pin_descs, and the "number" member says which GPIO it refers to. Signed-off-by: Phil Elwell --- drivers/pinctrl/bcm/pinctrl-bcm2712.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/drivers/pinctrl/bcm/pinctrl-bcm2712.c +++ b/drivers/pinctrl/bcm/pinctrl-bcm2712.c @@ -906,8 +906,13 @@ static int bcm2712_pmx_set(struct pinctr unsigned group_selector) { struct bcm2712_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev); + const struct pinctrl_desc *pctldesc = &pc->pctl_desc; + const struct pinctrl_pin_desc *pindesc; - bcm2712_pinctrl_fsel_set(pc, group_selector, func_selector); + if (group_selector >= pctldesc->npins) + return -EINVAL; + pindesc = &pctldesc->pins[group_selector]; + bcm2712_pinctrl_fsel_set(pc, pindesc->number, func_selector); return 0; }