Re: [PATCH v3 0/2] Avoid re-initializing XHCI HC during removal

[Wesley Cheng]

Friendly ping to see if there are any review feedback/concerns with this 
series?

Thanks
Wesley Cheng

On 5/31/2023 3:27 PM, Wesley Cheng wrote:
> There is an extra amount of overhead being adding to XHCI HCD removal
> cases when the HCD needs to undergo a runtime resume.  The xhc_reinit
> logic will attempt to restart the HC if there is a HCE observed during
> resume.  However, in the removal case, this is not required as the
> XHCI stop/halt will execute the same operations.  In addition, it isn't
> needed that the HC be placed back into the running state if it is being
> removed.
>
> Changes in v3:
> - Update xhci-plat to set the removal flag before issuing the runtime PM
> get
>
> Changes in v2:
> - Fixed spacing issue
>
> Wesley Cheng (2):
>    usb: host: xhci: Do not re-initialize the XHCI HC if being removed
>    usb: host: xhci-plat: Set XHCI_STATE_REMOVING before resuming XHCI HC
>
>   drivers/usb/host/xhci-plat.c | 2 +-
>   drivers/usb/host/xhci.c      | 3 ++-
>   2 files changed, 3 insertions(+), 2 deletions(-)