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PM / clk: ensure we don't allocate a -ve size of count clks

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It is entirely possible for of_count_phandle_wit_args to
return a -ve error return value so we need to check for this
otherwise we end up allocating a negative number of clk objects.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Colin Ian King 2016-04-16 13:50:03 +01:00 committed by Rafael J. Wysocki
parent 02da2d7217
commit 0b26985a7d
1 changed files with 1 additions and 1 deletions
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2
drivers/base/power/clock_ops.c
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@ -159,7 +159,7 @@ int of_pm_clk_add_clks(struct device *dev)
count = of_count_phandle_with_args(dev->of_node, "clocks",
"#clock-cells");
if (count == 0)
if (count <= 0)
return -ENODEV;
clks = kcalloc(count, sizeof(*clks), GFP_KERNEL);