HID: be more strict when ignoring out-of-range fields
HID 1.11 specification, section 5.10 tells us:
HID class devices support the ability to ignore selected fields in a
report at run- time. This is accomplished by declaring bit field in a
report that is capable of containing a range of values larger than
those actually generated by the control. If the host or the device
receives an out-of-range value then the current value for the
respective control will not be modified.
So we shouldn't be restricted to EV_ABS only.
Reported-by: Denilson Figueiredo de Sá <denilsonsa@gmail.com>
Tested-by: Denilson Figueiredo de Sá <denilsonsa@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index b7b0d55..6e32526 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -822,9 +822,8 @@
return;
}
- /* Ignore absolute values that are out of bounds */
- if ((usage->type == EV_ABS && (value < field->logical_minimum ||
- value > field->logical_maximum))) {
+ /* Ignore out-of-range values as per HID specification, section 5.10 */
+ if (value < field->logical_minimum || value > field->logical_maximum) {
dbg_hid("Ignoring out-of-range value %x\n", value);
return;
}