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nvme: fix for big endian systems 

writel() and co. already include the endian swap;  doing the swap twice
is, er, unhelpful.

Tested on a P4080DS, which boots perfectly fine off NVMe with this.

Signed-off-by: David Lamparter <equinox@diac24.net>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
David Lamparter 2021-05-06 20:24:30 +02:00 committed by Bin Meng
parent 6fbe06a6ce
commit b12f62374e
1 changed files with 4 additions and 4 deletions
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8
drivers/nvme/nvme.c
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@ -157,7 +157,7 @@ static u16 nvme_read_completion_status(struct nvme_queue *nvmeq, u16 index)
invalidate_dcache_range(start, stop);
return le16_to_cpu(readw(&(nvmeq->cqes[index].status)));
return readw(&(nvmeq->cqes[index].status));
}
/**
@ -221,7 +221,7 @@ static int nvme_submit_sync_cmd(struct nvme_queue *nvmeq,
}
if (result)
*result = le32_to_cpu(readl(&(nvmeq->cqes[head].result)));
*result = readl(&(nvmeq->cqes[head].result));
if (++head == nvmeq->q_depth) {
head = 0;
@ -304,7 +304,7 @@ static int nvme_enable_ctrl(struct nvme_dev *dev)
{
dev->ctrl_config &= ~NVME_CC_SHN_MASK;
dev->ctrl_config |= NVME_CC_ENABLE;
writel(cpu_to_le32(dev->ctrl_config), &dev->bar->cc);
writel(dev->ctrl_config, &dev->bar->cc);
return nvme_wait_ready(dev, true);
}
@ -313,7 +313,7 @@ static int nvme_disable_ctrl(struct nvme_dev *dev)
{
dev->ctrl_config &= ~NVME_CC_SHN_MASK;
dev->ctrl_config &= ~NVME_CC_ENABLE;
writel(cpu_to_le32(dev->ctrl_config), &dev->bar->cc);
writel(dev->ctrl_config, &dev->bar->cc);
return nvme_wait_ready(dev, false);
}