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| author |   Ingo Molnar <mingo@kernel.org> | 2017-03-01 09:02:26 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-01 09:02:26 +0100 |
| commit | 0871d5a66da5c41151e0896a90298b163e42f2e0 (patch) | |
| tree | 1ba71fab9016cb28bb9d18ffd62b6b744f2f761c /lib/dma-debug.c | |
| parent | x86/boot: Fix pr_debug() API braindamage (diff) | |
| parent | Merge tag 'for-linus-4.11' of git://git.code.sf.net/p/openipmi/linux-ipmi (diff) | |
| download | linux-rng-0871d5a66da5c41151e0896a90298b163e42f2e0.tar.xz linux-rng-0871d5a66da5c41151e0896a90298b163e42f2e0.zip | |
Merge branch 'linus' into WIP.x86/boot, to fix up conflicts and to pick up updates
Conflicts:
arch/x86/xen/setup.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib/dma-debug.c')
| -rw-r--r-- | lib/dma-debug.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/dma-debug.c b/lib/dma-debug.c index 8971370bfb16..60c57ec936db 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -1155,6 +1155,11 @@ static void check_unmap(struct dma_debug_entry *ref) dir2name[ref->direction]); } + /* + * Drivers should use dma_mapping_error() to check the returned + * addresses of dma_map_single() and dma_map_page(). + * If not, print this warning message. See Documentation/DMA-API.txt. + */ if (entry->map_err_type == MAP_ERR_NOT_CHECKED) { err_printk(ref->dev, entry, "DMA-API: device driver failed to check map error" |