linux-kernel - Re: [PATCH] pinctrl: qcom: lpass lpi: use default pullup/strength values

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <f30a6c1b-cd91-3442-fbac-10f508f8a640@linaro.org>
Date:   Fri, 5 Mar 2021 13:10:22 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Jonathan Marek <jonathan@...ek.ca>, linux-arm-msm@...r.kernel.org
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        "open list:PIN CONTROL SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] pinctrl: qcom: lpass lpi: use default pullup/strength
 values

Thanks Jonathan for fixing this!

On 04/03/2021 19:48, Jonathan Marek wrote:
> If these fields are not set in dts, the driver will use these variables
> uninitialized to set the fields. Not only will it set garbage values for
> these fields, but it can overflow into other fields and break those.
> 
> In the current sm8250 dts, the dmic01 entries do not have a pullup setting,
> and might not work without this change.
> 
> Fixes: 6e261d1090d6 ("pinctrl: qcom: Add sm8250 lpass lpi pinctrl driver")
> Signed-off-by: Jonathan Marek <jonathan@...ek.ca>
> ---

LGTM,
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>


--srini


>   drivers/pinctrl/qcom/pinctrl-lpass-lpi.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
> index 369ee20a7ea95..2f19ab4db7208 100644
> --- a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
> +++ b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
> @@ -392,7 +392,7 @@ static int lpi_config_set(struct pinctrl_dev *pctldev, unsigned int group,
>   			  unsigned long *configs, unsigned int nconfs)
>   {
>   	struct lpi_pinctrl *pctrl = dev_get_drvdata(pctldev->dev);
> -	unsigned int param, arg, pullup, strength;
> +	unsigned int param, arg, pullup = LPI_GPIO_BIAS_DISABLE, strength = 2;
>   	bool value, output_enabled = false;
>   	const struct lpi_pingroup *g;
>   	unsigned long sval;
>