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| author | Benjamin Tissoires | 2014-11-03 22:09:59 +0100 |
|---|---|---|
| committer | Jiri Kosina | 2014-11-04 11:10:19 +0100 |
| commit | 552f12eb68440a0328dc9929066f6d0321a75874 (patch) | |
| tree | d288bba4f78144ca1437851a353a0fd708fa7298 /drivers/hid/hid-logitech-hidpp.c | |
| parent | HID: logitech-hidpp: fix negated returns (diff) | |
| download | kernel-qcow2-linux-552f12eb68440a0328dc9929066f6d0321a75874.tar.gz kernel-qcow2-linux-552f12eb68440a0328dc9929066f6d0321a75874.tar.xz kernel-qcow2-linux-552f12eb68440a0328dc9929066f6d0321a75874.zip | |
HID: logitech-hidpp: 2 fixes in hidpp_root_get_protocol_version()
- remove the constant '1'
- when the device is not connected, the protocol error
HIDPP_ERROR_RESOURCE_ERROR is raised. We should not warn the user about
it because it is somewhat expected as an answer when we check if the
device is connected.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-logitech-hidpp.c')
| -rw-r--r-- | drivers/hid/hid-logitech-hidpp.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 61f9e75c45d2..1a6395d0c2bd 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -361,12 +361,16 @@ static int hidpp_root_get_protocol_version(struct hidpp_device *hidpp) CMD_ROOT_GET_PROTOCOL_VERSION, NULL, 0, &response); - if (ret == 1) { + if (ret == HIDPP_ERROR_INVALID_SUBID) { hidpp->protocol_major = 1; hidpp->protocol_minor = 0; return 0; } + /* the device might not be connected */ + if (ret == HIDPP_ERROR_RESOURCE_ERROR) + return -EIO; + if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret); |