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| author | Hans de Goede <hdegoede@redhat.com> | 2021-12-28 18:01:39 +0100 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2022-05-13 17:03:40 +0900 |
| commit | 12514f668c1fc608624b23a3cccc4845290c1211 (patch) | |
| tree | e933e00880979afbb8c2eee14923e5dd2a7a916e /drivers/extcon | |
| parent | 019c34aaa85895a15962e4cf65e99f812848e44f (diff) | |
| download | lwn-12514f668c1fc608624b23a3cccc4845290c1211.tar.gz lwn-12514f668c1fc608624b23a3cccc4845290c1211.zip | |
extcon: int3496: Request non-exclusive access to the ID GPIO
Some DSDTs are buggy and do a read from the ID pin during the ACPI
initialization, causing the pin to be marked as owned by:
"ACPI:OpRegion" and causing gpiod_get() to fail with -EBUSY.
Pass the GPIOD_FLAGS_BIT_NONEXCLUSIVE flag to the gpiod_get() call
to work around this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/extcon')
| -rw-r--r-- | drivers/extcon/extcon-intel-int3496.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/extcon/extcon-intel-int3496.c b/drivers/extcon/extcon-intel-int3496.c index df6ab4ef46f5..20605574020c 100644 --- a/drivers/extcon/extcon-intel-int3496.c +++ b/drivers/extcon/extcon-intel-int3496.c @@ -106,7 +106,8 @@ static int int3496_probe(struct platform_device *pdev) if (ret) return ret; - data->gpio_usb_id = devm_gpiod_get(dev, "id", GPIOD_IN); + data->gpio_usb_id = + devm_gpiod_get(dev, "id", GPIOD_IN | GPIOD_FLAGS_BIT_NONEXCLUSIVE); if (IS_ERR(data->gpio_usb_id)) { ret = PTR_ERR(data->gpio_usb_id); dev_err(dev, "can't request USB ID GPIO: %d\n", ret); |