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NVMe: Disable the device before we write the admin queues

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In case the card has been left in a partially-configured state,
write 0 to the Enable bit.

Signed-off-by: Shane Michael Matthews <shane.matthews@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
This commit is contained in:
Shane Michael Matthews 2011-02-01 11:31:55 -05:00 committed by Matthew Wilcox
parent 574e8b95bc
commit 5911f20039
1 changed files with 1 additions and 0 deletions
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1
drivers/block/nvme.c
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@ -668,6 +668,7 @@ static int __devinit nvme_configure_admin_queue(struct nvme_dev *dev)
dev->ctrl_config |= (PAGE_SHIFT - 12) << NVME_CC_MPS_SHIFT;
dev->ctrl_config |= NVME_CC_ARB_RR | NVME_CC_SHN_NONE;
writel(0, &dev->bar->cc);
writel(aqa, &dev->bar->aqa);
writeq(nvmeq->sq_dma_addr, &dev->bar->asq);
writeq(nvmeq->cq_dma_addr, &dev->bar->acq);