If dma-debug is disabled due to a memory error, DMA unmaps do not affect
the dma_active_cacheline radix tree anymore, and debug_dma_assert_idle()
can print false warnings.
Disable debug_dma_assert_idle() when dma_debug_disabled() is true.
Fixes: 0abdd7a81b7e ("dma-debug: introduce debug_dma_assert_idle()")
Cc: Dan Williams <dan.j.willi...@intel.com>
Cc: Joerg Roedel <j...@8bytes.org>
Cc: Vinod Koul <vinod.k...@intel.com>
Cc: Russell King <rmk+ker...@arm.linux.org.uk>
Cc: James Bottomley <jbottom...@parallels.com>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Florian Fainelli <f.faine...@gmail.com>
Cc: Sebastian Ott <seb...@linux.vnet.ibm.com>
Cc: Jiri Kosina <jkos...@suse.cz>
Cc: Horia Geanta <horia.gea...@freescale.com>
Signed-off-by: Haggai Eran <hagg...@mellanox.com>
---
lib/dma-debug.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index ae4b65e17e64..dace71fe41f7 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -574,6 +574,9 @@ void debug_dma_assert_idle(struct page *page)
unsigned long flags;
phys_addr_t cln;
+ if (dma_debug_disabled())
+ return;
+
if (!page)
return;
--
1.7.11.2
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