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authorSébastien Szymanski <sebastien.szymanski@armadeus.com>2017-11-10 10:01:43 +0100
committerJiri Kosina <jkosina@suse.cz>2017-11-10 13:32:35 +0100
commit7da85fbf1c87d4f73621e0e7666a3387497075a9 (patch)
treedf39ad1003583c8f70252f639b9f45db39f913ce
parentce4dd820d7bc4352e042bd3c7100d509b34ab6ba (diff)
downloadlinux-7da85fbf1c87d4f73621e0e7666a3387497075a9.tar.bz2
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>
-rw-r--r--drivers/hid/hid-cp2112.c8
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)