Initial commit

target/linux/bcm27xx/patches-6.6/950-0827-pinctrl-bcm2712-Fix-for-sparse-GPIOs.patch

@@ -0,0 +1,31 @@
+From 1b63d3a80c412d16198bcb6a71c07786f6ffa36c Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+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 <phil@raspberrypi.com>
+---
+ 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;
+ }