diff options
| author | Haggai Eran <[email protected]> | 2015-07-17 16:24:06 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2015-07-17 16:39:53 -0700 |
| commit | c9d120b0b2b5069cb2ae62f8eac0cef31c8544be (patch) | |
| tree | 5007001027c48ccc5c9717326bbc5666785634cb | |
| parent | 0f70fe605fad0f3215818ba79fc12617c0ec7f90 (diff) | |
dma-debug: skip debug_dma_assert_idle() when disabled
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.
Signed-off-by: Haggai Eran <[email protected]>
Fixes: 0abdd7a81b7e ("dma-debug: introduce debug_dma_assert_idle()")
Cc: Dan Williams <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Vinod Koul <[email protected]>
Cc: Russell King <[email protected]>
Cc: James Bottomley <[email protected]>
Cc: Florian Fainelli <[email protected]>
Cc: Sebastian Ott <[email protected]>
Cc: Jiri Kosina <[email protected]>
Cc: Horia Geanta <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | lib/dma-debug.c | 3 |
1 files changed, 3 insertions, 0 deletions
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; |