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Commit 783d0281 authored by Stefano Stabellini's avatar Stefano Stabellini
Browse files

swiotlb: print a warning when the swiotlb is full 



Signed-off-by: default avatarStefano Stabellini <stefano.stabellini@eu.citrix.com>

Changes in v7:
- use dev_warn instead of pr_warn.
parent 6cf05463

drivers/xen/swiotlb-xen.c

+1 −0
Original line number Diff line number Diff line
@@ -542,6 +542,7 @@ xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, 
								 sg->length,

								 dir);

			if (map == SWIOTLB_MAP_ERROR) {

				dev_warn(hwdev, "swiotlb buffer is full\n");

				/* Don't panic here, we expect map_sg users

				   to do proper error handling. */

				xen_swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir,

lib/swiotlb.c

+1 −0
Original line number Diff line number Diff line
@@ -502,6 +502,7 @@ phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, 


not_found:

	spin_unlock_irqrestore(&io_tlb_lock, flags);

	dev_warn(hwdev, "swiotlb buffer is full\n");

	return SWIOTLB_MAP_ERROR;

found:

	spin_unlock_irqrestore(&io_tlb_lock, flags);