From: Tony Lindgren <tony@atomide.com>
To: Drew Fustini <drew@beagleboard.org>
Cc: linux-arm-kernel@lists.infradead.org,
Rob Herring <robh+dt@kernel.org>,
linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-gpio@vger.kernel.org,
Linus Walleij <linus.walleij@linaro.org>,
Haojian Zhuang <haojian.zhuang@linaro.org>,
devicetree@vger.kernel.org, bcousson@baylibre.com,
Jason Kridner <jkridner@beagleboard.org>,
Robert Nelson <robertcnelson@gmail.com>,
Trent Piepho <tpiepho@gmail.com>
Subject: Re: [PATCH v2] pinctrl: single: check pinctrl_spec.args_count > 3
Date: Wed, 23 Sep 2020 09:55:39 +0300 [thread overview]
Message-ID: <20200923065539.GQ7101@atomide.com> (raw)
In-Reply-To: <20200913231557.2063071-1-drew@beagleboard.org>
* Drew Fustini <drew@beagleboard.org> [200913 23:18]:
> pinctrl_spec.args_count can either be 2 when #pinctrl-cells = 1 or
> 3 when #pinctrl-cells = 2.
>
> There is currently only a check to make sure that it is 2 or greater.
> This patch adds a check to make sure it is not greater than 3.
>
> Fixes: a13395418888 ("pinctrl: single: parse #pinctrl-cells = 2")
> Reported-by: Trent Piepho <tpiepho@gmail.com>
> Link: https://lore.kernel.org/linux-omap/3139716.CMS8C0sQ7x@zen.local/
> Signed-off-by: Drew Fustini <drew@beagleboard.org>
> ---
> v2 change:
> - this is a fix to my prior email where I referred to #pinctrl-cells
> exceeding 3 which is incorrect. It is pinctrl_spec.args_count which
> must be greater than 2 (when #pinctrl-cells = 1) and less than 3 (when
> #pinctrl-cells = 2)
Acked-by: Tony Lindgren <tony@atomide.com>
> https://lore.kernel.org/linux-omap/20200913210825.2022552-1-drew@beagleboard.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 efe41abc5d47..5cbf0e55087c 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
>
prev parent reply other threads:[~2020-09-23 6:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-13 23:15 [PATCH v2] pinctrl: single: check pinctrl_spec.args_count > 3 Drew Fustini
2020-09-23 6:55 ` Tony Lindgren [this message]
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