The system crashes during probing xgene-hwmon driver when temperature
alarm interrupt occurs before.
It's because
- xgene_hwmon_probe() requests mailbox channel which also enables
the mailbox interrupt.
- As temperature alarm interrupt is pending, ISR runs and crashes when
accesses into invalid resourse as unmapped PCC shared memory.
This patch fixes this issue by saving this alarm message and scheduling a
bottom handler after xgene_hwmon_probe() finish.
Signed-off-by: Hoan Tran <hotran@apm.com>
Reported-by: Itaru Kitayama <itaru.kitayama@riken.jp>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This patch adds hardware temperature and power reading support for
APM X-Gene SoC using the mailbox communication interface.
Signed-off-by: Hoan Tran <hotran@apm.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
hotran