Commits
Clemens Ladisch committed 07a723097cd
dma-mapping: fix sync_single_range_* DMA debugging Commit 5fd75a7850b5 (dma-mapping: remove unnecessary sync_single_range_* in dma_map_ops) unified not only the dma_map_ops but also the corresponding debug_dma_sync_* calls. This led to spurious WARN()ings like the following because the DMA debug code was no longer able to detect the DMA buffer base address without the separate offset parameter: WARNING: at lib/dma-debug.c:911 check_sync+0xce/0x446() firewire_ohci 0000:04:00.0: DMA-API: device driver tries to sync DMA memory it has not allocated [device address=0x00000000cedaa400] [size=1024 bytes] Call Trace: ... [<ffffffff811326a5>] check_sync+0xce/0x446 [<ffffffff81132ad9>] debug_dma_sync_single_for_device+0x39/0x3b [<ffffffffa01d6e6a>] ohci_queue_iso+0x4f3/0x77d [firewire_ohci] ... To fix this, unshare the sync_single_* and sync_single_range_* implementations so that we are able to call the correct debug_dma_sync_* functions. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>