| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 015/137] HID: logitech-hidpp: initialize level variable | Date | Tue, 8 Jun 2021 20:25:55 +0200 |
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From: Tom Rix <trix@redhat.com>
[ 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: 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> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/hid/hid-logitech-hidpp.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 74ebfb12c360..66b105162039 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -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) { -- 2.30.2
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