diff options
| author | Sébastien Szymanski <sebastien.szymanski@armadeus.com> | 2017-11-10 10:01:43 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2017-11-10 13:32:35 +0100 |
| commit | 7da85fbf1c87d4f73621e0e7666a3387497075a9 (patch) | |
| tree | df39ad1003583c8f70252f639b9f45db39f913ce /drivers/hid | |
| parent | HID: cp2112: fix interface specification URL (diff) | |
| download | linux-7da85fbf1c87d4f73621e0e7666a3387497075a9.tar.xz linux-7da85fbf1c87d4f73621e0e7666a3387497075a9.zip | |
HID: cp2112: fix broken gpio_direction_input callback
When everything goes smoothly, ret is set to 0 which makes the function
to return EIO error.
Fixes: 8e9faa15469e ("HID: cp2112: fix gpio-callback error handling")
Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-cp2112.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c index 28e3c18a4689..68cdc962265b 100644 --- a/drivers/hid/hid-cp2112.c +++ b/drivers/hid/hid-cp2112.c @@ -196,6 +196,8 @@ static int cp2112_gpio_direction_input(struct gpio_chip *chip, unsigned offset) HID_REQ_GET_REPORT); if (ret != CP2112_GPIO_CONFIG_LENGTH) { hid_err(hdev, "error requesting GPIO config: %d\n", ret); + if (ret >= 0) + ret = -EIO; goto exit; } @@ -205,8 +207,10 @@ static int cp2112_gpio_direction_input(struct gpio_chip *chip, unsigned offset) ret = hid_hw_raw_request(hdev, CP2112_GPIO_CONFIG, buf, CP2112_GPIO_CONFIG_LENGTH, HID_FEATURE_REPORT, HID_REQ_SET_REPORT); - if (ret < 0) { + if (ret != CP2112_GPIO_CONFIG_LENGTH) { hid_err(hdev, "error setting GPIO config: %d\n", ret); + if (ret >= 0) + ret = -EIO; goto exit; } @@ -214,7 +218,7 @@ static int cp2112_gpio_direction_input(struct gpio_chip *chip, unsigned offset) exit: mutex_unlock(&dev->lock); - return ret < 0 ? ret : -EIO; + return ret; } static void cp2112_gpio_set(struct gpio_chip *chip, unsigned offset, int value) |