Re: [PATCH 1/2] HWMON: coretemp, suspend fix

Len Brown
2007-12-04T06:30:38Z

Applied to suspend branch.

thanks,
-Len

On Monday 03 December 2007 12:01, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rjw@sisk.pl>
>
> It's not permitted to unregister a device after devices have been suspended.
> It causes deadlocks to appear on systems with coretemp hwmon loaded.  To avoid
> this, we can make coretemp_cpu_callback() do nothing if the _FROZEN bit is set
> in action.
>
> Also, in other cases it's generally too late to unregister the coretemp device
> if the CPU is already dead, so it should be unregistered on CPU_DOWN_PREPARE.
>
> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
> Acked-by: Mark M. Hoffman <mhoffman@lightlink.com>
> Cc: Jiri Slaby <jirislaby@gmail.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> ---
> drivers/hwmon/coretemp.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> Index: linux-2.6/drivers/hwmon/coretemp.c
> ===================================================================
> --- linux-2.6.orig/drivers/hwmon/coretemp.c
> +++ linux-2.6/drivers/hwmon/coretemp.c
> @@ -337,11 +337,10 @@ static int coretemp_cpu_callback(struct
>
> switch (action) {
> case CPU_ONLINE:
> - case CPU_ONLINE_FROZEN:
> + case CPU_DOWN_FAILED:
> coretemp_device_add(cpu);
> break;
> - case CPU_DEAD:
> - case CPU_DEAD_FROZEN:
> + case CPU_DOWN_PREPARE:
> coretemp_device_remove(cpu);
> break;
> }
>
>
-
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html