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| author | Stefan Wahren <wahrenst@gmx.net> | 2024-12-02 01:16:30 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-04 16:30:05 +0100 |
| commit | a8d3e4a734599c7d0f6735f8db8a812e503395dd (patch) | |
| tree | 6297cc98f061213bab5801e4761067172620e9d6 /tools/perf/scripts/python/parallel-perf.py | |
| parent | 336f72d3cbf5cc17df2947bbbd2ba6e2509f17e8 (diff) | |
usb: dwc2: hcd: Fix GetPortStatus & SetPortFeature
On Rasperry Pis without onboard USB hub the power cycle during
power connect init only disable the port but never enabled it again:
usb usb1-port1: attempt power cycle
The port relevant part in dwc2_hcd_hub_control() is skipped in case
port_connect_status = 0 under the assumption the core is or will be soon
in device mode. But this assumption is wrong, because after ClearPortFeature
USB_PORT_FEAT_POWER the port_connect_status will also be 0 and
SetPortFeature (incl. USB_PORT_FEAT_POWER) will be a no-op.
Fix the behavior of dwc2_hcd_hub_control() by replacing the
port_connect_status check with dwc2_is_device_mode().
Link: https://github.com/raspberrypi/linux/issues/6247
Fixes: 7359d482eb4d ("staging: HCD files for the DWC2 driver")
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://lore.kernel.org/r/20241202001631.75473-3-wahrenst@gmx.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/parallel-perf.py')
0 files changed, 0 insertions, 0 deletions