On Monday 11 June 2007, Rafael J. Wysocki wrote:
> On Monday, 11 June 2007 22:03, Bartlomiej Zolnierkiewicz wrote:
> >
> > Hi,
> >
> > On Monday 11 June 2007, Rafael J. Wysocki wrote:
> > > Hi,
> > >
> > > Here's the result of the search for the second patch that breaks resuming
> > > from RAM on HPC nx6325 (x86_64):
> > >
> > > ide-ide-hpa-detect-from-resume.patch
> > >
> > > The symptom is that after the resume there's no backlight and the screen
> > > apparently doesn't work, 100% of the time, although apart from this the system
> > > seems to be functional.
> >
> > I find it hard to accept that IDE patch is to blame for that. ;)
>
> But still (actually, I only don't know why it appeared to be functional :-)).
Yeah...
> > > The box doesn't even have an IDE HDD, but the DVD is handled by the atiixp
> > > driver.
> >
> > If there are no IDE disks in the system there should be absolutely no
> > change in the functionality.
>
> Sorry, but the patch is buggy. Fix appended, details in the changelog.
Yep, I know already, our emails crossed each other :)
> Greetings,
> Rafael
>
>
> ---
> From: Rafael J. Wysocki <[email protected]>
>
> generic_ide_resume() should check if dev->driver is not NULL before applying
> to_ide_driver() to it. Fix that.
>
> Signed-off-by: Rafael J. Wysocki <[email protected]>
Acked-by: Bartlomiej Zolnierkiewicz <[email protected]>
Thanks for fixing this.
> ---
> drivers/ide/ide.c | 9 ++++++---
> 1 file changed, 6 insertions(+), 3 deletions(-)
>
> Index: linux-2.6.22-rc4/drivers/ide/ide.c
> ===================================================================
> --- linux-2.6.22-rc4.orig/drivers/ide/ide.c
> +++ linux-2.6.22-rc4/drivers/ide/ide.c
> @@ -1010,7 +1010,6 @@ static int generic_ide_resume(struct dev
> {
> ide_drive_t *drive = dev->driver_data;
> ide_hwif_t *hwif = HWIF(drive);
> - ide_driver_t *drv = to_ide_driver(dev->driver);
> struct request rq;
> struct request_pm_state rqpm;
> ide_task_t args;
> @@ -1033,8 +1032,12 @@ static int generic_ide_resume(struct dev
>
> err = ide_do_drive_cmd(drive, &rq, ide_head_wait);
>
> - if (err == 0 && drv && drv->resume)
> - drv->resume(drive);
> + if (err == 0 && dev->driver) {
> + ide_driver_t *drv = to_ide_driver(dev->driver);
> +
> + if (drv->resume)
> + drv->resume(drive);
> + }
>
> return err;
> }
-
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