Commit 3469d36d authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

swiotlb: make swiotlb_exit a no-op if SWIOTLB_FORCE is set 



If force bouncing is enabled we can't release the buffers.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarAnshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
parent 07410559

kernel/dma/swiotlb.c

+3 −0
Original line number Diff line number Diff line
@@ -369,6 +369,9 @@ void __init swiotlb_exit(void) 
	unsigned long tbl_vaddr;

	size_t tbl_size, slots_size;



	if (swiotlb_force == SWIOTLB_FORCE)

		return;



	if (!mem->nslabs)

		return;