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Subject[PATCH 08/19] clk: st: fix handling result of of_property_count_strings
Date
The function can return negative value.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---
Hi,

To avoid problems with too many mail recipients I have sent whole
patchset only to LKML. Anyway patches have no dependencies.

Regards
Andrzej
---
drivers/clk/st/clk-flexgen.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/st/clk-flexgen.c b/drivers/clk/st/clk-flexgen.c
index bd355ee..24d9959 100644
--- a/drivers/clk/st/clk-flexgen.c
+++ b/drivers/clk/st/clk-flexgen.c
@@ -268,6 +268,7 @@ static void __init st_of_flexgen_setup(struct device_node *np)
int num_parents, i;
spinlock_t *rlock = NULL;
unsigned long flex_flags = 0;
+ int ret;

pnode = of_get_parent(np);
if (!pnode)
@@ -285,13 +286,13 @@ static void __init st_of_flexgen_setup(struct device_node *np)
if (!clk_data)
goto err;

- clk_data->clk_num = of_property_count_strings(np ,
- "clock-output-names");
- if (clk_data->clk_num <= 0) {
+ ret = of_property_count_strings(np, "clock-output-names");
+ if (ret <= 0) {
pr_err("%s: Failed to get number of output clocks (%d)",
__func__, clk_data->clk_num);
goto err;
}
+ clk_data->clk_num = ret;

clk_data->clks = kcalloc(clk_data->clk_num, sizeof(struct clk *),
GFP_KERNEL);
--
1.9.1


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