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backlight: add several debug logs and adjust log level of non critical error 

This may help to investigate issues.
This commit is contained in:
Yu Watanabe 2020-11-23 16:17:04 +09:00 committed by Lennart Poettering
parent 1d370b2c18
commit 8dc1ad04c2
1 changed files with 6 additions and 2 deletions
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8
src/backlight/backlight.c
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@ -252,6 +252,7 @@ static int get_max_brightness(sd_device *device, unsigned *ret) {
if (max_brightness <= 0)
return log_device_warning_errno(device, SYNTHETIC_ERRNO(EINVAL), "Maximum brightness is 0, ignoring device.");
log_device_debug(device, "Maximum brightness is %u", max_brightness);
*ret = max_brightness;
return 0;
}
@ -348,6 +349,7 @@ static int read_brightness(sd_device *device, unsigned max_brightness, unsigned
goto use_brightness;
}
log_device_debug(device, "Current actual_brightness is %u", brightness);
*ret_brightness = brightness;
return 0;
}
@ -366,6 +368,7 @@ use_brightness:
"brightness=%u is larger than max_brightness=%u",
brightness, max_brightness);
log_device_debug(device, "Current brightness is %u", brightness);
*ret_brightness = brightness;
return 0;
}
@ -456,10 +459,11 @@ static int run(int argc, char *argv[]) {
if (r > 0) {
r = safe_atou(value, &brightness);
if (r < 0) {
log_error_errno(r, "Failed to parse saved brightness '%s', removing %s.",
value, saved);
log_warning_errno(r, "Failed to parse saved brightness '%s', removing %s.",
value, saved);
(void) unlink(saved);
} else {
log_debug("Using saved brightness %u.", brightness);
if (clamp)
(void) clamp_brightness(device, true, max_brightness, &brightness);