[PATCH 5.19 06/33] nvme-pci: set min_align_mask before calculating max_hw_sectors

From: Greg Kroah-Hartman
Date: Thu Oct 13 2022 - 14:05:17 EST


From: Rishabh Bhatnagar <risbhat@xxxxxxxxxx>

commit 61ce339f19fabbc3e51237148a7ef6f2270e44fa upstream.

If swiotlb is force enabled dma_max_mapping_size ends up calling
swiotlb_max_mapping_size which takes into account the min align mask for
the device. Set the min align mask for nvme driver before calling
dma_max_mapping_size while calculating max hw sectors.

Signed-off-by: Rishabh Bhatnagar <risbhat@xxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/nvme/host/pci.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2825,6 +2825,8 @@ static void nvme_reset_work(struct work_
goto out;
}

+ dma_set_min_align_mask(dev->dev, NVME_CTRL_PAGE_SIZE - 1);
+
/*
* If we're called to reset a live controller first shut it down before
* moving on.
@@ -2858,7 +2860,6 @@ static void nvme_reset_work(struct work_
* Don't limit the IOMMU merged segment size.
*/
dma_set_max_seg_size(dev->dev, 0xffffffff);
- dma_set_min_align_mask(dev->dev, NVME_CTRL_PAGE_SIZE - 1);

mutex_unlock(&dev->shutdown_lock);