From: Brian Norris <computersforpeace@xxxxxxxxx>
commit 0b2e78865d92e2d70542cb1d4d7af1d4ea0a286d upstream.
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@xxxxxxxxx>
Cc: Jyri Sarha <jsarha@xxxxxx>
Cc: Sergej Sawazki <ce3a@xxxxxx>
Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Signed-off-by: Michael Turquette <mturquette@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/clk/clk-gpio.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/clk/clk-gpio.c
+++ b/drivers/clk/clk-gpio.c
@@ -287,12 +287,14 @@ static void __init of_gpio_clk_setup(str
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)
return;
