[PATCH] usb: host: ohci-at91: suspend/resume ports after/before OHCI accesses

Greg KH gregkh at linuxfoundation.org
Wed Jul 21 01:08:18 PDT 2021


On Wed, Jun 09, 2021 at 03:10:27PM +0300, Claudiu Beznea wrote:
> On SAMA7G5 suspending ports will cut the access to OHCI registers and
> any subsequent access to them will lead to CPU being blocked trying to
> access that memory. Same thing happens on resume: if OHCI memory is
> accessed before resuming ports the CPU will block on that access. The
> OCHI memory is accessed on suspend/resume though
> ohci_suspend()/ohci_resume().
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea at microchip.com>
> ---
> 
> The patch was tested on SAMA7G5, SAMA5D2 and SAM9X60.

This does not apply to 5.14-rc2, can you please rebase and resend?

thanks,

greg k-h



More information about the linux-arm-kernel mailing list