openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

hwmon: (w83795) Clear intrusion alarm immediately 

When asked to clear the intrusion alarm, do so immediately. We have to
invalidate the cache to make sure the new status will be read. But we
also have to read from the status register once to clear the pending
alarm, as writing to CLR_CHS surprising won't clear it automatically.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
This commit is contained in:
Jean Delvare 2010-11-15 21:38:57 +01:00 committed by Jean Delvare
parent cf6b9ea661
commit 793c51d5fd
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/hwmon/w83795.c
View File

@ -755,6 +755,10 @@ store_chassis_clear(struct device *dev,
val = w83795_read(client, W83795_REG_CLR_CHASSIS); val = w83795_read(client, W83795_REG_CLR_CHASSIS);
val |= 0x80; val |= 0x80;
w83795_write(client, W83795_REG_CLR_CHASSIS, val); w83795_write(client, W83795_REG_CLR_CHASSIS, val);
/* Clear status and force cache refresh */
w83795_read(client, W83795_REG_ALARM(5));
data->valid = 0;
mutex_unlock(&data->update_lock); mutex_unlock(&data->update_lock);
return count; return count;
} }