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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: Rachita Kothiyal <rachita@in.ibm.com> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -1451,9 +1451,12 @@ static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive)
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} else {
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confused:
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printk (KERN_ERR "%s: cdrom_pc_intr: The drive "
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"appears confused (ireason = 0x%02x)\n",
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"appears confused (ireason = 0x%02x). "
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"Trying to recover by ending request.\n",
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drive->name, ireason);
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rq->flags |= REQ_FAILED;
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cdrom_end_request(drive, 0);
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return ide_stopped;
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}
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/* Now we wait for another interrupt. */
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