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| author | Maciej Sosnowski <maciej.sosnowski@intel.com> | 2009-04-23 12:31:51 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-05-12 23:41:47 +0200 |
| commit | 4f005dbe5584fe54c9f6d6d4f0acd3fb29be84da (patch) | |
| tree | d9a4add9553af6c50fae59a79e9ab217945a7090 /drivers/cpufreq | |
| parent | ipu_idmac: Use disable_irq_nosync() from within irq handlers. (diff) | |
| download | linux-4f005dbe5584fe54c9f6d6d4f0acd3fb29be84da.tar.xz linux-4f005dbe5584fe54c9f6d6d4f0acd3fb29be84da.zip | |
ioatdma: fix "ioatdma frees DMA memory with wrong function"
as reported by Alexander Beregalov <a.beregalov@gmail.com>
ioatdma 0000:00:08.0: DMA-API: device driver frees DMA memory with
wrong function [device address=0x000000007f76f800] [size=2000 bytes]
[map
ped as single] [unmapped as page]
The ioatdma driver was unmapping all regions
(either allocated as page or single) using unmap_page.
This patch lets dma driver recognize if unmap_single or unmap_page should be used.
It introduces two new dma control flags:
DMA_COMPL_SRC_UNMAP_SINGLE and DMA_COMPL_DEST_UNMAP_SINGLE.
They should be set to indicate dma driver to do dma-unmapping as single
(first one for the source, tha latter for the destination).
If respective flag is not set, the driver assumes dma-unmapping as page.
Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Reported-by: Alexander Beregalov <a.beregalov@gmail.com>
Tested-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cpufreq')
0 files changed, 0 insertions, 0 deletions