Re: [PATCH stable-5.15 1/3] usb: dwc3: fix PHY disable sequence

Greg Kroah-Hartman
2022-09-06T12:20:35Z

On Tue, Sep 06, 2022 at 02:07:00PM +0200, Johan Hovold wrote:
> From: Johan Hovold <johan+linaro@kernel.org>
>
> commit d2ac7bef95c9ead307801ccb6cb6dfbeb14247bf upstream.
>
> Generic PHYs must be powered-off before they can be tore down.
>
> Similarly, suspending legacy PHYs after having powered them off makes no
> sense.
>
> Fix the dwc3_core_exit() (e.g. called during suspend) and open-coded
> dwc3_probe() error-path sequences that got this wrong.
>
> Note that this makes dwc3_core_exit() match the dwc3_core_init() error
> path with respect to powering off the PHYs.
>
> Fixes: 03c1fd622f72 ("usb: dwc3: core: add phy cleanup for probe error handling")
> Fixes: c499ff71ff2a ("usb: dwc3: core: re-factor init and exit paths")
> Cc: stable@vger.kernel.org # 4.8
> Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
> Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> Link: https://lore.kernel.org/r/20220804151001.23612-2-johan+linaro@kernel.org
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> [ johan: adjust context to 5.15 ]
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
> drivers/usb/dwc3/core.c | 19 ++++++++++---------
> 1 file changed, 10 insertions(+), 9 deletions(-)

This one did not apply to 4.9.y, 4.14.y, or 4.19.y :(