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 ?
Michele
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--- 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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