Hi!
> I have an ASUS-M2NPV motherboard and I have a SAMSUNG HD300LJ SATA hard-disk
> and an LG GDR8164B IDE DVD-ROM.
>
> I am running kernel 2.6.21.5 and I noticed that after resume from S3, my
> system
> crashes as soon as I try to access the DVD.
> Basically the crash is silent, that is there are no messages in the console.
>
> I have tried to apply patch in
> http://bugzilla.kernel.org/show_bug.cgi?id=6840,
> but it did not help.
>
> I managed to have DVD access OK after resume from S3 using the attached patch.
>
> Basically what I have done is to allow restore of PIO mode on resume also for
> ide_cdrom (normally it is enabled for ide_disk only), but I don't have a
> technical explanation why this is working.
>
> I have attached a patch of ide-io.c which works for me.
>
> Is anybody seeing this problem and do you have any comment about the patch ?
Patch looks okay to me. If it is still a problem in 2.6.23-rc2, you
may want to send it to Tejun (and I guess Cc me and akpm).
> --- linux-2.6.21.5.orig/drivers/ide/ide-io.c 2007-06-11 20:37:06.000000000
> +0200
> +++ linux-2.6.21.5/drivers/ide/ide-io.c 2007-06-16 16:49:55.000000000
> +0200
> @@ -143,7 +143,7 @@
> {
> struct request_pm_state *pm = rq->data;
>
> - if (drive->media != ide_disk)
> + if ((drive->media != ide_disk) && (drive->media != ide_cdrom))
> return;
>
> switch (pm->pm_step) {
> @@ -172,7 +172,7 @@
>
> memset(args, 0, sizeof(*args));
>
> - if (drive->media != ide_disk) {
> + if ((drive->media != ide_disk) && (drive->media != ide_cdrom)) {
> /*
> * skip idedisk_pm_restore_pio and idedisk_pm_idle for ATAPI
> * devices
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--
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(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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