Re: [PATCH] pinctrl: nsp: off by ones in nsp_pinmux_enable()

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Hi Dan,

On 7/3/2018 5:04 AM, Dan Carpenter wrote:
The > comparisons should be >= or else we read beyond the end of the
pinctrl->functions[] array.

Fixes: cc4fa83f66e9 ("pinctrl: nsp: add pinmux driver support for Broadcom NSP SoC")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/pinctrl/bcm/pinctrl-nsp-mux.c b/drivers/pinctrl/bcm/pinctrl-nsp-mux.c
index 35c17653c694..5cd8166fbbc8 100644
--- a/drivers/pinctrl/bcm/pinctrl-nsp-mux.c
+++ b/drivers/pinctrl/bcm/pinctrl-nsp-mux.c
@@ -460,8 +460,8 @@ static int nsp_pinmux_enable(struct pinctrl_dev *pctrl_dev,
  	const struct nsp_pin_function *func;
  	const struct nsp_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];


Fix looks good to me. Thanks!

Reviewed-by: Ray Jui <ray.jui@xxxxxxxxxxxx>
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