linux-kernel - Re: [PATCH] platform/chrome: fix crash during suspend

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Date:   Mon, 29 Jul 2019 13:29:15 +0200
From:   Enric Balletbo i Serra <enric.balletbo@...labora.com>
To:     Hyungwoo Yang <hyungwoo.yang@...el.com>
Cc:     linux-kernel@...r.kernel.org, rushikesh.s.kadam@...el.com,
        jettrink@...omium.org, Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>
Subject: Re: [PATCH] platform/chrome: fix crash during suspend

Hi,

cc'ing: Benson and Guenter

Please don't forget to add all the chrome-platform maintainers in the cc list.

On 30/5/19 6:03, Hyungwoo Yang wrote:
> Kernel crashes during suspend due to wrong conversion in
> suspend and resume functions.
> 
> Use the proper helper to get ishtp_cl_device instance.
> 
> Signed-off-by: Hyungwoo Yang <hyungwoo.yang@...el.com>

I added the cros_ec_ishtp prefix in the subject and cc'ied stable to apply this
for 5.2+ (the patch depends on "b12bbdc5: HID: intel-ish-hid: fix wrong
driver_data usage")

The patch will be pushed to the chrome-platform-5.3-fixes branch for the
autobuilders to play with, if all goes well we will do a fixes PR during this cycle.

Thanks,
~ Enric

> ---
>  drivers/platform/chrome/cros_ec_ishtp.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/platform/chrome/cros_ec_ishtp.c b/drivers/platform/chrome/cros_ec_ishtp.c
> index e504d25..430731c 100644
> --- a/drivers/platform/chrome/cros_ec_ishtp.c
> +++ b/drivers/platform/chrome/cros_ec_ishtp.c
> @@ -707,7 +707,7 @@ static int cros_ec_ishtp_reset(struct ishtp_cl_device *cl_device)
>   */
>  static int __maybe_unused cros_ec_ishtp_suspend(struct device *device)
>  {
> -	struct ishtp_cl_device *cl_device = dev_get_drvdata(device);
> +	struct ishtp_cl_device *cl_device = ishtp_dev_to_cl_device(device);
>  	struct ishtp_cl	*cros_ish_cl = ishtp_get_drvdata(cl_device);
>  	struct ishtp_cl_data *client_data = ishtp_get_client_data(cros_ish_cl);
>  
> @@ -722,7 +722,7 @@ static int __maybe_unused cros_ec_ishtp_suspend(struct device *device)
>   */
>  static int __maybe_unused cros_ec_ishtp_resume(struct device *device)
>  {
> -	struct ishtp_cl_device *cl_device = dev_get_drvdata(device);
> +	struct ishtp_cl_device *cl_device = ishtp_dev_to_cl_device(device);
>  	struct ishtp_cl	*cros_ish_cl = ishtp_get_drvdata(cl_device);
>  	struct ishtp_cl_data *client_data = ishtp_get_client_data(cros_ish_cl);
>  
>