Commit f722e17fdb2c97bbec2563636dd88489cdb1428b
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6501f728c5
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power_supply: Ignore -ENODATA errors when generating uevents
Sometimes a driver can not report a meaningful value for a certain property and returns -ENODATA. Currently when generating a uevent and a property return -ENODATA it is treated as an error an no uevent is generated at all. This is not an desirable behavior. This patch adds a special case for -ENODATA and ignores properties which return this error code when generating the uevent. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff
drivers/power/power_supply_sysfs.c
| ... | ... | @@ -270,7 +270,7 @@ |
| 270 | 270 | attr = &power_supply_attrs[psy->properties[j]]; |
| 271 | 271 | |
| 272 | 272 | ret = power_supply_show_property(dev, attr, prop_buf); |
| 273 | - if (ret == -ENODEV) { | |
| 273 | + if (ret == -ENODEV || ret == -ENODATA) { | |
| 274 | 274 | /* When a battery is absent, we expect -ENODEV. Don't abort; |
| 275 | 275 | send the uevent with at least the the PRESENT=0 property */ |
| 276 | 276 | ret = 0; |