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| author | Sean Wang <sean.wang@mediatek.com> | 2026-06-13 17:41:28 -0500 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2026-07-31 12:25:38 +0000 |
| commit | e137e5fd245cb6c0ae378607cc8090c913d984b2 (patch) | |
| tree | 00193edaa7fc6a1656b3306884a8630cb525e981 /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | c781b74c3fd0c24db33ca7cfc0b9a3857d623543 (diff) | |
wifi: mt76: mt792x: stop USB register access after bus hang
Mark the mt792x USB bus hung on the first control timeout and switch
register access to no-op bus ops. Each failed vendor request may spend
up to MT_VEND_REQ_MAX_RETRY * MT_VEND_REQ_TOUT_MS, about 3 seconds, and
teardown/reset paths can keep issuing such requests after the device has
stopped responding.
Also skip the USB WFSYS reset path after bus_hung is set, since it uses
UHW vendor requests as well.
mt7925u 1-2:1.3: vendor request req:63 off:0018 failed:-110
mt7925u 1-2:1.3: vendor request req:63 off:0018 failed:-110
mt7925u 1-2:1.3: vendor request req:63 off:0018 failed:-110
mt7925u 1-2:1.3: vendor request req:63 off:0018 failed:-110
mt7925u 1-2:1.3: vendor request req:63 off:0018 failed:-110
Avoid repeating those register reads after the bus is known to be hung by
switching register access to no-op handlers.
Fixes: 0d2afe09fad5 ("mt76: mt7921: add mt7921u driver")
Fixes: c948b5da6bbe ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260613224131.2396026-4-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions