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| author | Christoph Hellwig <hch@lst.de> | 2019-06-25 11:01:35 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2019-07-01 11:17:00 +0200 |
| commit | 69878ef47562f32e02d0b7975c990e1c0339320d (patch) | |
| tree | 8a33017b7cacf7905dc0c2a85c6b64d283c51610 /Documentation/backlight | |
| parent | 34dc63a5fb9b7f5dcb49f61552226c6314f347f6 (diff) | |
| download | lwn-69878ef47562f32e02d0b7975c990e1c0339320d.tar.gz lwn-69878ef47562f32e02d0b7975c990e1c0339320d.zip | |
m68k: Implement arch_dma_prep_coherent()
When we remap memory as non-cached, to be used as a DMA coherent buffer,
we should writeback all cache and invalidate the cache lines so that we
make sure we have a clean slate. Implement this using the cache_push()
helper.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'Documentation/backlight')
0 files changed, 0 insertions, 0 deletions