diff options
| author | Benjamin Tissoires <[email protected]> | 2017-03-27 16:59:32 +0200 |
|---|---|---|
| committer | Jiri Kosina <[email protected]> | 2017-04-06 14:36:38 +0200 |
| commit | a9525b80feb1b6ae40244b16b0558cbdc64f28cd (patch) | |
| tree | 7e4afaaa44e435672db65a5a16612059d19d42f1 | |
| parent | a52ec107fa81c8f799654b860e262f07bd14d63a (diff) | |
HID: logitech-hidpp: return an error if the queried feature is not present
Or the device just answers a valid feature '0'.
Signed-off-by: Benjamin Tissoires <[email protected]>
Tested-by: Bastien Nocera <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
| -rw-r--r-- | drivers/hid/hid-logitech-hidpp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 9a9771a31108..22129ddac3ae 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -503,6 +503,9 @@ static int hidpp_root_get_feature(struct hidpp_device *hidpp, u16 feature, if (ret) return ret; + if (response.fap.params[0] == 0) + return -ENOENT; + *feature_index = response.fap.params[0]; *feature_type = response.fap.params[1]; |