From: Jia-Ju Bai baijiaju1990@gmail.com
[ Upstream commit 45c7eaeb29d67224db4ba935deb575586a1fda09 ]
When kcalloc() returns NULL to __tcbp or of_count_phandle_with_args() returns zero or -ENOENT to count, no error return code of thermal_of_populate_bind_params() is assigned. To fix these bugs, ret is assigned with -ENOMEM and -ENOENT in these cases, respectively.
Fixes: a92bab8919e3 ("of: thermal: Allow multiple devices to share cooling map") Reported-by: TOTE Robot oslab@tsinghua.edu.cn Signed-off-by: Jia-Ju Bai baijiaju1990@gmail.com Signed-off-by: Daniel Lezcano daniel.lezcano@linaro.org Link: https://lore.kernel.org/r/20210310122423.3266-1-baijiaju1990@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/thermal/thermal_of.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c index 69ef12f852b7..5b76f9a1280d 100644 --- a/drivers/thermal/thermal_of.c +++ b/drivers/thermal/thermal_of.c @@ -704,14 +704,17 @@ static int thermal_of_populate_bind_params(struct device_node *np,
count = of_count_phandle_with_args(np, "cooling-device", "#cooling-cells"); - if (!count) { + if (count <= 0) { pr_err("Add a cooling_device property with at least one device\n"); + ret = -ENOENT; goto end; }
__tcbp = kcalloc(count, sizeof(*__tcbp), GFP_KERNEL); - if (!__tcbp) + if (!__tcbp) { + ret = -ENOMEM; goto end; + }
for (i = 0; i < count; i++) { ret = of_parse_phandle_with_args(np, "cooling-device",