Author: manu
Date: Tue Nov 24 14:05:35 2020
New Revision: 367984
URL: https://svnweb.freebsd.org/changeset/base/367984
Log:
arm64: Check if we have a map before checking the flags
This fixes amdgpu on arm64 where linuxkpi is calling id_mapped
and we call might_bounce without a map.
Modified:
head/sys/arm64/arm64/busdma_bounce.c
Modified: head/sys/arm64/arm64/busdma_bounce.c
==============================================================================
--- head/sys/arm64/arm64/busdma_bounce.c Tue Nov 24 13:19:31 2020
(r367983)
+++ head/sys/arm64/arm64/busdma_bounce.c Tue Nov 24 14:05:35 2020
(r367984)
@@ -207,7 +207,7 @@ might_bounce(bus_dma_tag_t dmat, bus_dmamap_t map, bus
{
/* Memory allocated by bounce_bus_dmamem_alloc won't bounce */
- if ((map->flags & DMAMAP_FROM_DMAMEM) != 0)
+ if (map && (map->flags & DMAMAP_FROM_DMAMEM) != 0)
return (false);
if ((dmat->bounce_flags & BF_COULD_BOUNCE) != 0)
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