HID: cp2112: fix broken gpio_direction_input callback
[ Upstream commit 7da85fbf1c87d4f73621e0e7666a3387497075a9 ]
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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index e06c134..7af7781 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -188,6 +188,8 @@
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;
}
@@ -197,8 +199,10 @@
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;
}
@@ -206,7 +210,7 @@
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)