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HID: logitech-hidpp: initialize level variable

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[ Upstream commit 81c8bf9170477d453b24a6bc3300d201d641e645 ]

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: be281368f2 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tom Rix 2021-05-07 12:18:19 -07:00 committed by Greg Kroah-Hartman
parent 4b1aba6536
commit 39b92726a3
1 changed files with 1 additions and 0 deletions
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drivers/hid/hid-logitech-hidpp.c
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@ -1259,6 +1259,7 @@ 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) {