From: "Heiko Stübner" <heiko@sntech.de>
To: linus.walleij@linaro.org, Jianqun Xu <jay.xu@rock-chips.com>
Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rockchip@lists.infradead.org,
Jianqun Xu <jay.xu@rock-chips.com>
Subject: Re: [PATCH 5/6] pinctrl: rockchip: fix crash caused by invalid gpio bank
Date: Sun, 06 Sep 2020 00:14:12 +0200 [thread overview]
Message-ID: <6529745.9OfISSL0U5@diego> (raw)
In-Reply-To: <20200831085010.7235-1-jay.xu@rock-chips.com>
Hi,
Am Montag, 31. August 2020, 10:50:10 CEST schrieb Jianqun Xu:
> Add valid check for gpio bank.
Please add more description on where this happened.
> Change-Id: Ia4609c3045b5df7879beab3c15d791ff54a1f49b
Please drop the change-id.
> Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
> ---
> drivers/pinctrl/pinctrl-rockchip.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
> index 6080573155f6..5b16b69e311f 100644
> --- a/drivers/pinctrl/pinctrl-rockchip.c
> +++ b/drivers/pinctrl/pinctrl-rockchip.c
> @@ -2526,9 +2526,9 @@ static int rockchip_pmx_set(struct pinctrl_dev *pctldev, unsigned selector,
> break;
> }
>
> - if (ret) {
> + if (ret && cnt) {
> /* revert the already done pin settings */
> - for (cnt--; cnt >= 0; cnt--)
> + for (cnt--; cnt >= 0 && !data[cnt].func; cnt--)
This looks unrelated and as it's not a "check for a valid gpio-bank" it
should become a separate patch with a commit message describing it nicely.
> rockchip_set_mux(bank, pins[cnt] - bank->pin_base, 0);
>
> return ret;
> @@ -2599,9 +2599,13 @@ static int rockchip_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
> unsigned offset, bool input)
> {
> struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev);
> + struct rockchip_pin_bank *bank = &info->ctrl->pin_banks[offset / 32];
> struct gpio_chip *chip;
> int pin;
>
> + if (!bank || !bank->valid)
> + return 0;
> +
> chip = range->gc;
> pin = offset - chip->base;
> dev_dbg(info->dev, "gpio_direction for pin %u as %s-%d to %s\n",
> @@ -3022,6 +3026,8 @@ static int rockchip_pinctrl_register(struct platform_device *pdev,
>
> for (bank = 0; bank < info->ctrl->nr_banks; ++bank) {
> pin_bank = &info->ctrl->pin_banks[bank];
> + if (!pin_bank->valid)
> + continue;
Please add a blank line here
> pin_bank->grange.name = pin_bank->name;
> pin_bank->grange.id = bank;
> pin_bank->grange.pin_base = pin_bank->pin_base;
>
Thanks
Heiko
next prev parent reply other threads:[~2020-09-05 22:14 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-31 8:47 [PATCH 0/6] rockchip-pinctrl fixes for GKI Jianqun Xu
2020-08-31 8:47 ` [PATCH 1/6] pinctrl: rockchip: make driver be tristate module Jianqun Xu
2020-09-01 10:13 ` kernel test robot
2020-09-05 21:51 ` Heiko Stübner
2020-09-05 22:01 ` Heiko Stübner
2020-09-05 22:23 ` Heiko Stübner
2020-08-31 8:47 ` [PATCH 2/6] pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to_irq Jianqun Xu
2020-09-05 21:54 ` Heiko Stübner
2020-08-31 8:47 ` [PATCH 3/6] pinctrl: rockchip: create irq mapping in gpio_to_irq Jianqun Xu
2020-09-05 22:03 ` Heiko Stübner
2020-08-31 8:47 ` [PATCH 4/6] pinctrl: rockchip: do not set gpio if bank invalid Jianqun Xu
2020-09-05 22:09 ` Heiko Stübner
2020-08-31 8:50 ` [PATCH 5/6] pinctrl: rockchip: fix crash caused by invalid gpio bank Jianqun Xu
2020-09-05 22:14 ` Heiko Stübner [this message]
2020-08-31 8:50 ` [PATCH 6/6] pinctrl: rockchip: populate platform device for rockchip gpio Jianqun Xu
2020-09-06 10:20 ` Heiko Stübner
2020-09-07 2:59 ` [PATCH v2 0/5] rockchip-pinctrl fixes for GKI Jianqun Xu
2020-09-07 2:59 ` [PATCH 1/5] pinctrl: rockchip: depend on OF Jianqun Xu
2020-09-07 2:59 ` [PATCH 2/5] pinctrl: rockchip: make driver be tristate module Jianqun Xu
2020-09-07 11:35 ` kernel test robot
2020-09-12 11:41 ` Heiko Stübner
2020-09-14 0:38 ` [PATCH 2/2] " Jianqun Xu
2020-09-20 22:14 ` Heiko Stübner
2020-09-20 22:18 ` Heiko Stübner
2020-09-29 13:21 ` Linus Walleij
2020-10-13 6:40 ` jay.xu
2020-09-07 2:59 ` [PATCH 3/5] pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to_irq Jianqun Xu
2020-09-07 2:59 ` [PATCH 4/5] pinctrl: rockchip: create irq mapping in gpio_to_irq Jianqun Xu
2020-09-07 3:38 ` [PATCH 5/5] pinctrl: rockchip: populate platform device for rockchip gpio Jianqun Xu
2020-09-08 2:19 ` [PATCH] " Jianqun Xu
2020-09-20 22:16 ` Heiko Stübner
2020-09-12 11:35 ` [PATCH v2 0/5] rockchip-pinctrl fixes for GKI Linus Walleij
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=6529745.9OfISSL0U5@diego \
--to=heiko@sntech.de \
--cc=jay.xu@rock-chips.com \
--cc=linus.walleij@linaro.org \
--cc=linux-gpio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rockchip@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).