From: trix@redhat.com
To: jikos@kernel.org, benjamin.tissoires@redhat.com, pedro@pedrovanzella.com
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
Tom Rix <trix@redhat.com>
Subject: [PATCH] HID: logitech-hidpp: initialize level variable
Date: Fri, 7 May 2021 12:18:19 -0700 [thread overview]
Message-ID: <20210507191819.71092-1-trix@redhat.com> (raw)
From: Tom Rix <trix@redhat.com>
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>
---
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 69670ca7e1e1..61635e629469 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -1265,6 +1265,7 @@ 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) {
--
2.26.3
next reply other threads:[~2021-05-07 19:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-07 19:18 trix [this message]
2021-05-16 3:21 ` [PATCH] HID: logitech-hidpp: initialize level variable Filipe Laíns
2021-05-26 10:39 ` Jiri Kosina
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