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-rw-r--r--kernel/dma/swiotlb.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 6fc2606e014b..767c8fb36a6b 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -330,6 +330,11 @@ void __init swiotlb_init_remap(bool addressing_limit, unsigned int flags,
io_tlb_default_mem.force_bounce =
swiotlb_force_bounce || (flags & SWIOTLB_FORCE);
+#ifdef CONFIG_SWIOTLB_DYNAMIC
+ if (!remap)
+ io_tlb_default_mem.can_grow = true;
+#endif
+
if (!default_nareas)
swiotlb_adjust_nareas(num_possible_cpus());
@@ -400,6 +405,11 @@ int swiotlb_init_late(size_t size, gfp_t gfp_mask,
io_tlb_default_mem.force_bounce = swiotlb_force_bounce;
+#ifdef CONFIG_SWIOTLB_DYNAMIC
+ if (!remap)
+ io_tlb_default_mem.can_grow = true;
+#endif
+
if (!default_nareas)
swiotlb_adjust_nareas(num_possible_cpus());
@@ -1073,6 +1083,9 @@ bool is_swiotlb_active(struct device *dev)
*/
phys_addr_t default_swiotlb_base(void)
{
+#ifdef CONFIG_SWIOTLB_DYNAMIC
+ io_tlb_default_mem.can_grow = false;
+#endif
return io_tlb_default_mem.defpool.start;
}