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| author | Frode Isaksen | 2017-02-23 19:02:00 +0100 |
|---|---|---|
| committer | Mark Brown | 2017-03-15 20:35:39 +0100 |
| commit | 4dd9becbce4f10009322c3e2297f9db3ace94a10 (patch) | |
| tree | 09a1f660b4fd532335aa44d8df4220fcb37f835b /firmware | |
| parent | spi: davinci: do not use DMA if transfer length is less than 16 (diff) | |
| download | kernel-qcow2-linux-4dd9becbce4f10009322c3e2297f9db3ace94a10.tar.gz kernel-qcow2-linux-4dd9becbce4f10009322c3e2297f9db3ace94a10.tar.xz kernel-qcow2-linux-4dd9becbce4f10009322c3e2297f9db3ace94a10.zip | |
spi: davinci: do not use DMA for vmalloc'ed buffers
Using vmalloc'ed buffers will fail since daVinci has
VIVT cache and only the kernel lowmem virtual address
is invalidated/flushed when performing DMA.
The virtual address returned from vmalloc() is not
invalidated/flushed and may contain stale data when
returning from spi_sync().
Fixes errors when running UBIFS over SPI NOR.
Revert this when all upper layer users of vmalloc'ed
buffers sent to SPI handles cache flushing/invalidating.
Signed-off-by: Frode Isaksen <fisaksen@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'firmware')
0 files changed, 0 insertions, 0 deletions