Commit 1ad55440 authored by Rachita Kothiyal's avatar Rachita Kothiyal Committed by Linus Torvalds
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[PATCH] Fix cdrom being confused on using kdump



I have seen the cdrom drive appearing confused on using kdump on certain
x86_64 systems.  During the booting up of the second kernel, the following
message would keep flooding the console, and the booting would not proceed
any further.

hda: cdrom_pc_intr: The drive appears confused (ireason = 0x01)

In this patch, whenever we are hitting a confused state in the interrupt
handler with the DRQ set, we end the request and return ide_stopped.  Using
this I dont see the status error.
Signed-off-by: default avatarRachita Kothiyal <rachita@in.ibm.com>
Acked-by: default avatarJens Axboe <axboe@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 5fa21d82
......@@ -1451,9 +1451,12 @@ static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive)
} else {
confused:
printk (KERN_ERR "%s: cdrom_pc_intr: The drive "
"appears confused (ireason = 0x%02x)\n",
"appears confused (ireason = 0x%02x). "
"Trying to recover by ending request.\n",
drive->name, ireason);
rq->flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
return ide_stopped;
}
/* Now we wait for another interrupt. */
......
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