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authorJia-Ju Bai <baijiaju1990@gmail.com>2021-03-10 15:24:23 +0300
committerDaniel Lezcano <daniel.lezcano@linaro.org>2021-03-10 15:41:33 +0300
commit45c7eaeb29d67224db4ba935deb575586a1fda09 (patch)
tree4cc80358b614661748e0657d8340fb132bd3e8b9 /drivers/thermal/thermal_of.c
parent7440e912b0fe755d80b958a65859ebabb5338cf8 (diff)
downloadlinux-45c7eaeb29d67224db4ba935deb575586a1fda09.tar.xz
thermal: thermal_of: Fix error return code of thermal_of_populate_bind_params()
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
Diffstat (limited to 'drivers/thermal/thermal_of.c')
-rw-r--r--drivers/thermal/thermal_of.c7
1 files 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",