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authorMathias Nyman <mathias.nyman@linux.intel.com>2025-06-27 19:43:48 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-06-30 15:36:00 +0200
commit9bd9c8026341f75f25c53104eb7e656e357ca1a2 (patch)
treea60c001887229705d5c06e817f37bddd9a996ac8 /scripts/lib/kdoc/kdoc_parser.py
parentefe3e3ae5a66cb38ef29c909e951b4039044bae9 (diff)
usb: hub: Fix flushing of delayed work used for post resume purposes
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>
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