hid: egalax: Report zero as minimum pressure
The firmware reports a logical minimum of one, but in order for
userspace applications to correctly map all reported values to
non-zero pressure, the driver needs to report a logical minimum of
zero. Fixed with this patch.
Tested-by: Philipp Merkel <mail@philmerk.de>
Cc: Stephane Chatty <chatty@enac.fr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
diff --git a/drivers/hid/hid-egalax.c b/drivers/hid/hid-egalax.c
index 733bebc..aac8a63 100644
--- a/drivers/hid/hid-egalax.c
+++ b/drivers/hid/hid-egalax.c
@@ -90,6 +90,7 @@
set_abs(input, ABS_MT_TRACKING_ID, field, 0);
return 1;
case HID_DG_TIPPRESSURE:
+ field->logical_minimum = 0;
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_PRESSURE);
set_abs(input, ABS_MT_PRESSURE, field, 0);