Re: [PATCH] PCI: pciehp: Add quirk for QDF2400 Command Completed erratum

From: Mika Westerberg
Date: Mon May 07 2018 - 08:44:02 EST


On Sun, May 06, 2018 at 06:30:53AM -0400, Sinan Kaya wrote:
> The QDF2400 controller does not set the Command Completed bit unless
> writes to the Slot Command register change "Control" bits. Command
> Completed is never set for writes that only change software notification
> "Enable" bits. This results in timeouts like this:
>
> pciehp 0000:00:00.0:pcie004: Timeout on hotplug command 0x1038
>
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Sinan Kaya <okaya@xxxxxxxxxxxxxx>

Reviewed-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>