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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2026-09-07 16:42:19 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2026-09-14 10:53:45 +0200 |
| commit | 4d84caebab18c7c5bc84a3ed7cfef439449f7ae3 (patch) | |
| tree | 74976ac001bb26e5ff16e3f498910edd4be61217 | |
| parent | 20bea8ceeb6ab6ab918ee8fdf5855541214907c4 (diff) | |
| download | linux-next-4d84caebab18c7c5bc84a3ed7cfef439449f7ae3.tar.gz linux-next-4d84caebab18c7c5bc84a3ed7cfef439449f7ae3.zip | |
thunderbolt: Write descriptors in tb_ring_poll()
When the ring is not in interrupt mode, it depends on something
enqueuing new frames to write the descriptors from ring->queue to the
hardware, and that can take a long time. Since we know that we just
released one slot, we can push the next frame directly from
tb_ring_poll().
Reported-by: Alan Borzeszkowski <alan.borzeszkowski@linux.intel.com>
Assisted-by: LLM
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
| -rw-r--r-- | drivers/thunderbolt/nhi.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c index 521ba8b57b28..836f5d0013b0 100644 --- a/drivers/thunderbolt/nhi.c +++ b/drivers/thunderbolt/nhi.c @@ -439,6 +439,13 @@ struct ring_frame *tb_ring_poll(struct tb_ring *ring) } ring->tail = (ring->tail + 1) % ring->size; + + /* + * There is one more slot available so we can push next + * descriptor to the ring. This is needed when the ring + * is created with %RING_FLAG_NO_INTERRUPT. + */ + ring_write_descriptors(ring, true); } unlock: |