diff options
| author | Takashi Iwai <[email protected]> | 2022-11-12 09:47:18 +0100 |
|---|---|---|
| committer | Takashi Iwai <[email protected]> | 2022-11-12 09:48:51 +0100 |
| commit | 9d8e536d36e75e76614fe09ffab9a1df95b8b666 (patch) | |
| tree | dfc3999923e3facea7df340060046d41e01dfe15 /lib/memory-notifier-error-inject.c | |
| parent | 9a5523f72bd2b0d66eef3d58810c6eb7b5ffc143 (diff) | |
ALSA: memalloc: Try dma_alloc_noncontiguous() at first
The latest fix for the non-contiguous memalloc helper changed the
allocation method for a non-IOMMU system to use only the fallback
allocator. This should have worked, but it caused a problem sometimes
when too many non-contiguous pages are allocated that can't be treated
by HD-audio controller.
As a quirk workaround, go back to the original strategy: use
dma_alloc_noncontiguous() at first, and apply the fallback only when
it fails, but only for non-IOMMU case.
We'll need a better fix in the fallback code as well, but this
workaround should paper over most cases.
Fixes: 9736a325137b ("ALSA: memalloc: Don't fall back for SG-buffer with IOMMU")
Reported-by: Linus Torvalds <[email protected]>
Link: https://lore.kernel.org/r/CAHk-=wgSH5ubdvt76gNwa004ooZAEJL_1Q-Fyw5M2FDdqL==dg@mail.gmail.com
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
Diffstat (limited to 'lib/memory-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions