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power-supply: Return early if "power-supplies" property isn't valid

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If power-supply's DT node doesn't have a valid "power-supplies" entry, then
power_supply_check_supplies() should return early instead of trying to allocate
memory for "supplied_from" array.

Signed-off-by: Viresh Kumar <[email protected]>
Signed-off-by: Sebastian Reichel <[email protected]>
This commit is contained in:
Viresh Kumar 2014-09-04 17:31:23 +05:30 • committed by Sebastian Reichel
commit f9c85486c4
1 changed files with 4 additions and 0 deletions
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4
drivers/power/power_supply_core.c
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@ -226,6 +226,10 @@ static int power_supply_check_supplies(struct power_supply *psy)
of_node_put(np);
} while (np);
/* Missing valid "power-supplies" entries */
if (cnt == 1)
return 0;
/* All supplies found, allocate char ** array for filling */
psy->supplied_from = devm_kzalloc(psy->dev, sizeof(psy->supplied_from),
GFP_KERNEL);