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author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2025-05-14 16:25:20 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-21 13:11:27 +0200 |
commit | 89bb3dc13ac29a563f4e4c555e422882f64742bd (patch) | |
tree | a5547ba702afb8436a2ddd985902f7f25fba0c7e /tools/perf/scripts/python/task-analyzer.py | |
parent | e33ebb133a245a48b543d6eb79768a66f233656b (diff) |
usb: Flush altsetting 0 endpoints before reinitializating them after reset.
usb core avoids sending a Set-Interface altsetting 0 request after device
reset, and instead relies on calling usb_disable_interface() and
usb_enable_interface() to flush and reset host-side of those endpoints.
xHCI hosts allocate and set up endpoint ring buffers and host_ep->hcpriv
during usb_hcd_alloc_bandwidth() callback, which in this case is called
before flushing the endpoint in usb_disable_interface().
Call usb_disable_interface() before usb_hcd_alloc_bandwidth() to ensure
URBs are flushed before new ring buffers for the endpoints are allocated.
Otherwise host driver will attempt to find and remove old stale URBs
from a freshly allocated new ringbuffer.
Cc: stable <stable@kernel.org>
Fixes: 4fe0387afa89 ("USB: don't send Set-Interface after reset")
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20250514132520.225345-1-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/task-analyzer.py')
0 files changed, 0 insertions, 0 deletions