From 8e2a782af3c1ec80b7cff05942e743ee80ab22f0 Mon Sep 17 00:00:00 2001 From: Tom Rini Date: Thu, 18 Nov 2021 20:18:22 -0500 Subject: [PATCH] Revert "nvme: Fix error in nvme_setup_prps" Dependent commit has unaddressed review comments. This reverts commit c4eef59faab6ae4ecb1beae6d4391b0889bc3ff3. Signed-off-by: Tom Rini --- drivers/nvme/nvme.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/nvme/nvme.c b/drivers/nvme/nvme.c index 22ded62..9623c89 100644 --- a/drivers/nvme/nvme.c +++ b/drivers/nvme/nvme.c @@ -100,7 +100,7 @@ static int nvme_setup_prps(struct nvme_dev *dev, u64 *prp2, } nprps = DIV_ROUND_UP(length, page_size); - num_pages = DIV_ROUND_UP(nprps + 1, prps_per_page); + num_pages = DIV_ROUND_UP(nprps, prps_per_page); if (nprps > dev->prp_entry_num) { free(dev->prp_pool); @@ -119,11 +119,10 @@ static int nvme_setup_prps(struct nvme_dev *dev, u64 *prp2, prp_pool = dev->prp_pool; i = 0; while (nprps) { - if (i == prps_per_page) { - *(prp_pool + i) = *(prp_pool + i - 1); - *(prp_pool + i - 1) = cpu_to_le64((ulong)prp_pool + + if (i == ((page_size >> 3) - 1)) { + *(prp_pool + i) = cpu_to_le64((ulong)prp_pool + page_size); - i = 1; + i = 0; prp_pool += page_size; } *(prp_pool + i++) = cpu_to_le64(dma_addr); -- 2.7.4