On 2018년 02월 13일 04:46, Hans de Goede wrote:
> Some other drivers may be waiting for our extcon to show-up (exiting their
> probe methods with -EPROBE_DEFER until we show up).
>
> These drivers will typically get the cable state directly after getting
> the extcon, this commit changes the int3496 code to process the id-pin
> before registering the extcon, so that other drivers see the correct state
> right away.
>
> Fixes: 2f556bdb9f2e ("extcon: int3496: Add Intel INT3496 ACPI ... driver")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> ---
> Changes in v2:
> -Add Fixes tag
>
> Changes in v3:
> -Fix oops on probe by scheduling the work too early
> ---
> drivers/extcon/extcon-intel-int3496.c | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/extcon/extcon-intel-int3496.c b/drivers/extcon/extcon-intel-int3496.c
> index c8691b5a9cb0..673bb26a9a2a 100644
> --- a/drivers/extcon/extcon-intel-int3496.c
> +++ b/drivers/extcon/extcon-intel-int3496.c
> @@ -131,11 +131,15 @@ static int int3496_probe(struct platform_device *pdev)
> if (IS_ERR(data->gpio_usb_mux))
> dev_info(dev, "can't request USB MUX GPIO\n");
>
> - /* register extcon device */
> data->edev = devm_extcon_dev_allocate(dev, int3496_cable);
> if (IS_ERR(data->edev))
> return -ENOMEM;
>
> + /* process id-pin first so that we start with the right status */
> + queue_delayed_work(system_wq, &data->work, 0);
> + flush_delayed_work(&data->work);
> +
> + /* register extcon device */
> ret = devm_extcon_dev_register(dev, data->edev);
> if (ret < 0) {
> dev_err(dev, "can't register extcon device: %d\n", ret);
> @@ -153,9 +157,6 @@ static int int3496_probe(struct platform_device *pdev)
> return ret;
> }
>
> - /* queue initial processing of id-pin */
> - queue_delayed_work(system_wq, &data->work, 0);
> -
> platform_set_drvdata(pdev, data);
>
> return 0;
>
Applied it.
--
Best Regards,
Chanwoo Choi
Samsung Electronics