HID: logitech-hidpp: initialize level variable

Static analysis reports this representative problem

hid-logitech-hidpp.c:1356:23: warning: Assigned value is
  garbage or undefined
        hidpp->battery.level = level;
                             ^ ~~~~~

In some cases, 'level' is never set in hidpp20_battery_map_status_voltage()
Since level is not available on all hw, initialize level to unknown.

Fixes: be281368f297 ("hid-logitech-hidpp: read battery voltage from newer devices")
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Filipe Laíns <lains@riseup.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index d598094dadd0c52db909bbd44b2097ad53207bab..fee4e54a3ce083535656e6558c2f7dcb1e24f9e7 100644 (file)
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -1263,6 +1263,7 @@ static int hidpp20_battery_map_status_voltage(u8 data[3], int *voltage,
        int status;
 
        long flags = (long) data[2];
+       *level = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN;
 
        if (flags & 0x80)
                switch (flags & 0x07) {