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nvme: Correct the prps per page calculation method 

Each prp is 8 bytes, calculate the number of prps
per page should just divide page size by 8
there is no need to minus 1

Signed-off-by: Wesley Sheng <wesleyshenggit@sina.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Wesley Sheng 2021-06-22 11:34:21 +08:00 committed by Bin Meng
parent b12f62374e
commit 859b33c948
1 changed files with 1 additions and 1 deletions
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2
drivers/nvme/nvme.c
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@ -81,7 +81,7 @@ static int nvme_setup_prps(struct nvme_dev *dev, u64 *prp2,
u64 *prp_pool;
int length = total_len;
int i, nprps;
u32 prps_per_page = (page_size >> 3) - 1;
u32 prps_per_page = page_size >> 3;
u32 num_pages;
length -= (page_size - offset);