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cciss: do not use bit 2 doorbell reset 

It causes NMIs which are undesirable at best, unsurvivable at worst.
Prefer the soft reset instead.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Stephen M. Cameron 2011-05-03 14:54:07 -05:00 committed by Jens Axboe
parent ec52d5f1cb
commit 063d2cf72a
1 changed files with 8 additions and 2 deletions
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10
drivers/block/cciss.c
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@ -4673,8 +4673,14 @@ static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev)
use_doorbell = DOORBELL_CTLR_RESET2;
} else {
use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
if (use_doorbell)
use_doorbell = DOORBELL_CTLR_RESET;
if (use_doorbell) {
dev_warn(&pdev->dev, "Controller claims that "
"'Bit 2 doorbell reset' is "
"supported, but not 'bit 5 doorbell reset'. "
"Firmware update is recommended.\n");
rc = -ENOTSUPP; /* use the soft reset */
goto unmap_cfgtable;
}
}
rc = cciss_controller_hard_reset(pdev, vaddr, use_doorbell);