From: Andrzej Hajda <a.hajda@samsung.com>
To: linux-kernel@vger.kernel.org
Cc: "Andrzej Hajda" <a.hajda@samsung.com>,
"Bartlomiej Zolnierkiewicz" <b.zolnierkie@samsung.com>,
"Marek Szyprowski" <m.szyprowski@samsung.com>,
"Pali Rohár" <pali.rohar@gmail.com>,
"Sebastian Reichel" <sre@kernel.org>,
"Dmitry Eremin-Solenikov" <dbaryshkov@gmail.com>,
"David Woodhouse" <dwmw2@infradead.org>,
linux-pm@vger.kernel.org (open list:POWER SUPPLY CLASS/SUBSYSTEM
and DRIVERS)
Subject: [PATCH] fix handling bq27xxx_read result
Date: Mon, 28 Sep 2015 10:51:27 +0200 [thread overview]
Message-ID: <1443430287-575-1-git-send-email-a.hajda@samsung.com> (raw)
The function can return negative value.
The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].
[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---
drivers/power/bq27xxx_battery.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/power/bq27xxx_battery.c b/drivers/power/bq27xxx_battery.c
index 473aa2f..994c78d 100644
--- a/drivers/power/bq27xxx_battery.c
+++ b/drivers/power/bq27xxx_battery.c
@@ -691,7 +691,7 @@ static bool bq27xxx_battery_dead(struct bq27xxx_device_info *di, u16 flags)
*/
static int bq27xxx_battery_read_health(struct bq27xxx_device_info *di)
{
- u16 flags;
+ int flags;
flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, false);
if (flags < 0) {
--
1.9.1
next reply other threads:[~2015-09-28 8:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-28 8:51 Andrzej Hajda [this message]
2015-09-28 8:57 ` Pali Rohár
2015-09-28 16:34 ` Sebastian Reichel
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