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70c33e211b
Sashiko reports:
The return value in heater_enable_store() causes an unexpected write
failure in user-space.
When the heater is successfully enabled, the function returns 0
instead of count:
drivers/hwmon/sht4x.c:heater_enable_store() {
...
data->heating_complete = jiffies + msecs_to_jiffies(heating_time_bound);
data->data_pending = true;
return 0;
}
Returning 0 signals to VFS that no bytes were processed. Standard
user-space tools will retry the write with the remaining bytes. On the
retry, time_before(jiffies, data->heating_complete) evaluates to true,
and the function immediately fails with -EBUSY.
Return count as expected to fix the problem.
Fixes: 0eed6fc3d2 ("hwmon: (sht4x): add heater support")
Cc: Antoni Pokusinski <apokusinski01@gmail.com>
Cc: Alessandro Zini <alessandro.zini@siemens.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://patch.msgid.link/20260821144916.2889031-2-linux@roeck-us.net
457 lines
11 KiB
457 lines
11 KiB