On 13/06/2023 11:56, Yangtao Li wrote:
Ensure that all error handling branches print error information. In this
way, when this function fails, the upper-layer functions can directly
return an error code without missing debugging information. Otherwise,
the error message will be printed redundantly or missing.
Signed-off-by: Yangtao Li <frank.li@xxxxxxxx>
---
Resend patchset so that the changes to thermal/hwmon.c are copied to everyone.
drivers/thermal/thermal_hwmon.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/thermal/thermal_hwmon.c b/drivers/thermal/thermal_hwmon.c
index fbe55509e307..a580add5a2f6 100644
--- a/drivers/thermal/thermal_hwmon.c
+++ b/drivers/thermal/thermal_hwmon.c
@@ -271,11 +271,14 @@ int devm_thermal_add_hwmon_sysfs(struct device *dev, struct thermal_zone_device
ptr = devres_alloc(devm_thermal_hwmon_release, sizeof(*ptr),
GFP_KERNEL);
- if (!ptr)
+ if (!ptr) {
+ dev_err(dev, "Failed to allocate device resource data\n");
return -ENOMEM;
+ }
When an allocation fails, there is a callstack showed. It is not
necessary to print an error in this case.
ret = thermal_add_hwmon_sysfs(tz);
if (ret) {
+ dev_err(dev, "Failed to add hwmon sysfs attributes\n");
devres_free(ptr);
return ret;
}
That should not display an error. The call site will take care of that.
--
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