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| author | Nuno Sá <nuno.sa@analog.com> | 2025-11-04 16:22:25 +0000 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2025-12-23 16:43:15 +0530 |
| commit | 9bd257181fd5c996d922e9991500ad27987cfbf4 (patch) | |
| tree | 80a605fa640208f497f7b47d0fef121e78856383 /tools/perf/lib/Documentation/tutorial/git@git.tavy.me:linux.git | |
| parent | c3af05623e079c2a9a9363386796fdea20defa18 (diff) | |
dma: dma-axi-dmac: fix SW cyclic transfers
If 'hw_cyclic' is false we should still be able to do cyclic transfers in
"software". That was not working for the case where 'desc->num_sgs' is 1
because 'chan->next_desc' is never set with the current desc which means
that the cyclic transfer only runs once and in the next SOT interrupt we
do nothing since vchan_next_desc() will return NULL.
Fix it by setting 'chan->next_desc' as soon as we get a new desc via
vchan_next_desc().
Fixes: 0e3b67b348b8 ("dmaengine: Add support for the Analog Devices AXI-DMAC DMA controller")
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
base-commit: 398035178503bf662281bbffb4bebce1460a4bc5
change-id: 20251104-axi-dmac-fixes-and-improvs-e3ad512a329c
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Link: https://patch.msgid.link/20251104-axi-dmac-fixes-and-improvs-v1-1-3e6fd9328f72@analog.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'tools/perf/lib/Documentation/tutorial/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions