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