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| author | Brian Norris <computersforpeace@gmail.com> | 2015-12-16 10:35:03 -0800 |
|---|---|---|
| committer | Michael Turquette <mturquette@baylibre.com> | 2015-12-31 21:54:45 -0800 |
| commit | 0b2e78865d92e2d70542cb1d4d7af1d4ea0a286d (patch) | |
| tree | 2c410f51420be70bb3f232af460f95c56708fadd /drivers/clk/clk-gpio.c | |
| parent | c76eb11c8f0bae27aa4db9a18031a497ba6e2636 (diff) | |
| download | linux-0b2e78865d92e2d70542cb1d4d7af1d4ea0a286d.tar.gz linux-0b2e78865d92e2d70542cb1d4d7af1d4ea0a286d.tar.bz2 linux-0b2e78865d92e2d70542cb1d4d7af1d4ea0a286d.zip | |
clk: gpio: handle error codes for of_clk_get_parent_count()
We might make bad memory allocations if we get (e.g.) -ENOSYS from
of_clk_get_parent_count().
Noticed by Coverity.
Fixes: f66541ba02d5 ("clk: gpio: Get parent clk names in of_gpio_clk_setup()")
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Jyri Sarha <jsarha@ti.com>
Cc: Sergej Sawazki <ce3a@gmx.de>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Diffstat (limited to 'drivers/clk/clk-gpio.c')
| -rw-r--r-- | drivers/clk/clk-gpio.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/clk/clk-gpio.c b/drivers/clk/clk-gpio.c index c1baa89cbf91..1767b9e3ca93 100644 --- a/drivers/clk/clk-gpio.c +++ b/drivers/clk/clk-gpio.c @@ -287,12 +287,14 @@ static void __init of_gpio_clk_setup(struct device_node *node, const char **parent_names; int i, num_parents; + num_parents = of_clk_get_parent_count(node); + if (num_parents < 0) + return; + data = kzalloc(sizeof(*data), GFP_KERNEL); if (!data) return; - num_parents = of_clk_get_parent_count(node); - parent_names = kcalloc(num_parents, sizeof(char *), GFP_KERNEL); if (!parent_names) { kfree(data); |