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| author | Christoph Hellwig <hch@lst.de> | 2021-11-09 15:47:56 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2021-12-07 12:50:06 +0100 |
| commit | 955f58f7406ad912825fc344c7825fd904b124a0 (patch) | |
| tree | a23e035d3fd7886c708f7bb0937990e0d30267bd /drivers/platform/x86/intel/pmt/class.c | |
| parent | a86d10942db2e0099a369b367fe62898f95987a8 (diff) | |
| download | linux-955f58f7406ad912825fc344c7825fd904b124a0.tar.gz linux-955f58f7406ad912825fc344c7825fd904b124a0.tar.bz2 linux-955f58f7406ad912825fc344c7825fd904b124a0.zip | |
dma-direct: fail allocations that can't be made coherent
If the architecture can't remap or set an address uncached there is no way
to fullfill a request for a coherent allocation. Return NULL in that case.
Note that this case currently does not happen, so this is a theoretical
fixup and/or a preparation for eventually supporting platforms that
can't support coherent allocations with the generic code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Diffstat (limited to 'drivers/platform/x86/intel/pmt/class.c')
0 files changed, 0 insertions, 0 deletions