From: Viresh Kumar <viresh.kumar@linaro.org>
To: sre@kernel.org, dbaryshkov@gmail.com, dwmw2@infradead.org,
anton@enomsg.org
Cc: linux-pm@vger.kernel.org, linaro-kernel@lists.linaro.org,
Viresh Kumar <viresh.kumar@linaro.org>
Subject: [PATCH 01/15] power-supply: Don't over-allocate memory for "supplied-from" array
Date: Thu, 4 Sep 2014 17:31:22 +0530 [thread overview]
Message-ID: <2eacd908a8094887cc1796f75ae0513be8a3e36d.1409831636.git.viresh.kumar@linaro.org> (raw)
In-Reply-To: <cover.1409831636.git.viresh.kumar@linaro.org>
In routine power_supply_check_supplies(), 'cnt' is counting the number of
supplies passed in "power-supplies" field of a node. The value of 'cnt' will
always be one more than the number of supplies after the do-while loop ends. And
so we need to allocate memory for 'cnt - 1' char pointers. But we are allocating
memory for 'cnt' instead.
Fix this by not over-allocating memory.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/power/power_supply_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index 078afd6..10f0b57 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -234,7 +234,7 @@ static int power_supply_check_supplies(struct power_supply *psy)
return -ENOMEM;
}
- *psy->supplied_from = devm_kzalloc(psy->dev, sizeof(char *) * cnt,
+ *psy->supplied_from = devm_kzalloc(psy->dev, sizeof(char *) * (cnt - 1),
GFP_KERNEL);
if (!*psy->supplied_from) {
dev_err(psy->dev, "Couldn't allocate memory for supply list\n");
--
2.0.3.693.g996b0fd
next prev parent reply other threads:[~2014-09-04 12:02 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-04 12:00 [PATCH 00/15] power_supply: Fixes & cleanups Viresh Kumar
2014-09-04 12:01 ` Viresh Kumar [this message]
2014-09-04 12:01 ` [PATCH 02/15] power-supply: Return early if "power-supplies" property isn't valid Viresh Kumar
2014-09-04 12:01 ` [PATCH 03/15] Documentation: Charger Manager: Fix spelling mistakes Viresh Kumar
2014-09-04 12:01 ` [PATCH 04/15] power-supply: Forward declare structs together Viresh Kumar
2014-09-04 12:01 ` [PATCH 05/15] power-supply: Drop unnecessary typecasts Viresh Kumar
2014-09-04 12:01 ` [PATCH 06/15] power-supply: Use 'break' instead of 'continue' to end loop Viresh Kumar
2014-09-04 12:01 ` [PATCH 07/15] power-supply: Rearrange code to remove duplicate lines Viresh Kumar
2014-09-04 12:01 ` [PATCH 08/15] power-supply: Propagate error returned by power_supply_find_supply_from_node() Viresh Kumar
2014-09-04 12:01 ` [PATCH 09/15] power-supply: Don't return -EINVAL from __power_supply_find_supply_from_node() Viresh Kumar
2014-09-04 12:01 ` [PATCH 10/15] power-supply: Drop useless 'if (ret.intval)' statements Viresh Kumar
2014-09-04 12:01 ` [PATCH 11/15] power-supply: Mark 'if' blocks in power_supply_changed_work() with 'likely' Viresh Kumar
2014-09-04 12:01 ` [PATCH 12/15] power-supply: Use PTR_ERR_OR_ZERO() routine Viresh Kumar
2014-09-04 12:01 ` [PATCH 13/15] power-supply: Check for failures only when we can fail Viresh Kumar
2014-09-04 12:01 ` [PATCH 14/15] power-supply: Avoid unnecessary 'goto' statements Viresh Kumar
2014-09-04 12:01 ` [PATCH 15/15] power_supply: Don't iterate over devices to return -EPROBE_DEFER Viresh Kumar
2014-10-01 3:19 ` [PATCH 00/15] power_supply: Fixes & cleanups Viresh Kumar
2014-10-01 15:08 ` Sebastian Reichel
2014-10-02 5:26 ` Viresh Kumar
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