Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.9 358/757] pinctrl: single: fix pinctrl_spec.args_count bounds check | Date | Tue, 27 Oct 2020 14:50:08 +0100 |
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From: Drew Fustini <drew@beagleboard.org>
[ Upstream commit 9b9448f39e83d8e6fdfed006c5db8c304a98c2cd ]
The property #pinctrl-cells can either be 1 or 2:
- if #pinctrl-cells = <1>, then pinctrl_spec.args_count = 2 - if #pinctrl-cells = <2>, then pinctrl_spec.args_count = 3
All other values of pinctrl_spec.args_count are incorrect. This fix checks the upper bound instead of just the lower bound.
Fixes: a13395418888 ("pinctrl: single: parse #pinctrl-cells = 2") Reported-by: Trent Piepho <tpiepho@gmail.com> Signed-off-by: Drew Fustini <drew@beagleboard.org> Acked-by: Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/linux-omap/3139716.CMS8C0sQ7x@zen.local/ Link: https://lore.kernel.org/r/20200930174839.1308344-1-drew@beagleboard.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/pinctrl/pinctrl-single.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index efe41abc5d472..5cbf0e55087c6 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -1014,7 +1014,7 @@ static int pcs_parse_one_pinctrl_entry(struct pcs_device *pcs, if (res) return res; - if (pinctrl_spec.args_count < 2) { + if (pinctrl_spec.args_count < 2 || pinctrl_spec.args_count > 3) { dev_err(pcs->dev, "invalid args_count for spec: %i\n", pinctrl_spec.args_count); break; -- 2.25.1
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