diff options
| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2025-06-27 19:43:48 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-24 08:58:41 +0200 |
| commit | 1375b96db2a6132281614eb3a3e3f15af6237e55 (patch) | |
| tree | 0078485f0097885ed19b72e41ea9700274e18538 /net/lapb/lapb_timer.c | |
| parent | f7d1af38b3f192e0333aa9f3c23c6be835e3062a (diff) | |
usb: hub: Fix flushing of delayed work used for post resume purposes
commit 9bd9c8026341f75f25c53104eb7e656e357ca1a2 upstream.
Delayed work that prevents USB3 hubs from runtime-suspending too early
needed to be flushed in hub_quiesce() to resolve issues detected on
QC SC8280XP CRD board during suspend resume testing.
This flushing did however trigger new issues on Raspberry Pi 3B+, which
doesn't have USB3 ports, and doesn't queue any post resume delayed work.
The flushed 'hub->init_work' item is used for several purposes, and
is originally initialized with a 'NULL' work function. The work function
is also changed on the fly, which may contribute to the issue.
Solve this by creating a dedicated delayed work item for post resume work,
and flush that delayed work in hub_quiesce()
Cc: stable <stable@kernel.org>
Fixes: a49e1e2e785f ("usb: hub: Fix flushing and scheduling of delayed work that tunes runtime pm")
Reported-by: Mark Brown <broonie@kernel.org>
Closes: https://lore.kernel.org/linux-usb/aF5rNp1l0LWITnEB@finisterre.sirena.org.uk
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Tested-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> # SC8280XP CRD
Tested-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250627164348.3982628-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/lapb/lapb_timer.c')
0 files changed, 0 insertions, 0 deletions