* [PATCH AUTOSEL 4.19 12/38] pinctrl: ns2: Fix off by one bugs in ns2_pinmux_enable()
[not found] <20191030155406.10109-1-sashal@kernel.org>
@ 2019-10-30 15:53 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2019-10-30 15:53 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Dan Carpenter, Scott Branden, Linus Walleij, Sasha Levin,
linux-gpio
From: Dan Carpenter <dan.carpenter@oracle.com>
[ Upstream commit 39b65fbb813089e366b376bd8acc300b6fd646dc ]
The pinctrl->functions[] array has pinctrl->num_functions elements and
the pinctrl->groups[] array is the same way. These are set in
ns2_pinmux_probe(). So the > comparisons should be >= so that we don't
read one element beyond the end of the array.
Fixes: b5aa1006e4a9 ("pinctrl: ns2: add pinmux driver support for Broadcom NS2 SoC")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20190926081426.GB2332@mwanda
Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pinctrl/bcm/pinctrl-ns2-mux.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/pinctrl/bcm/pinctrl-ns2-mux.c b/drivers/pinctrl/bcm/pinctrl-ns2-mux.c
index 4b5cf0e0f16e2..951090faa6a91 100644
--- a/drivers/pinctrl/bcm/pinctrl-ns2-mux.c
+++ b/drivers/pinctrl/bcm/pinctrl-ns2-mux.c
@@ -640,8 +640,8 @@ static int ns2_pinmux_enable(struct pinctrl_dev *pctrl_dev,
const struct ns2_pin_function *func;
const struct ns2_pin_group *grp;
- if (grp_select > pinctrl->num_groups ||
- func_select > pinctrl->num_functions)
+ if (grp_select >= pinctrl->num_groups ||
+ func_select >= pinctrl->num_functions)
return -EINVAL;
func = &pinctrl->functions[func_select];
--
2.20.1
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