Hi!
> From: Stefan Seyfried <[EMAIL PROTECTED]>
>
> Fix the Oops occuring when SNAPSHOT_PMOPS or SNAPSHOT_S2RAM ioctl is called on
> a system without pm_ops defined (eg. a non-ACPI kernel on x86 PC).
>
> Signed-off-by: Stefan Seyfried <[EMAIL PROTECTED]>
> Signed-off-by: Rafael J. Wysocki <[EMAIL PROTECTED]>
ACK.
Pavel
> ---
>
> user.c | 19 ++++++++++++-------
> 1 file changed, 12 insertions(+), 7 deletions(-)
>
> --- a/kernel/power/user.c 2007-02-01 01:07:38.000000000 +0100
> +++ b/kernel/power/user.c 2007-02-01 22:25:48.000000000 +0100
> @@ -292,7 +292,7 @@ static int snapshot_ioctl(struct inode *
> break;
> }
>
> - if (pm_ops->prepare) {
> + if (pm_ops && pm_ops->prepare) {
> error = pm_ops->prepare(PM_SUSPEND_MEM);
> if (error)
> goto OutS3;
> @@ -311,7 +311,7 @@ static int snapshot_ioctl(struct inode *
> device_resume();
> }
> resume_console();
> - if (pm_ops->finish)
> + if (pm_ops && pm_ops->finish)
> pm_ops->finish(PM_SUSPEND_MEM);
>
> OutS3:
> @@ -322,20 +322,25 @@ static int snapshot_ioctl(struct inode *
> switch (arg) {
>
> case PMOPS_PREPARE:
> - if (pm_ops->prepare) {
> + if (pm_ops && pm_ops->prepare)
> error = pm_ops->prepare(PM_SUSPEND_DISK);
> - }
> + else
> + error = -ENOSYS;
> break;
>
> case PMOPS_ENTER:
> kernel_shutdown_prepare(SYSTEM_SUSPEND_DISK);
> - error = pm_ops->enter(PM_SUSPEND_DISK);
> + if (pm_ops && pm_ops->enter)
> + error = pm_ops->enter(PM_SUSPEND_DISK);
> + else
> + error = -ENOSYS;
> break;
>
> case PMOPS_FINISH:
> - if (pm_ops && pm_ops->finish) {
> + if (pm_ops && pm_ops->finish)
> pm_ops->finish(PM_SUSPEND_DISK);
> - }
> + else
> + error = -ENOSYS;
> break;
>
> default:
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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