Re: [PATCH v2] thunderbolt: Fix connection issue with Pluggable UD-4VPD dock

[Mika Westerberg <mika.westerberg@linux.intel.com>]

On Tue, Nov 05, 2024 at 11:54:55AM +0100, Greg KH wrote:
> On Tue, Nov 05, 2024 at 12:31:57PM +0200, Mika Westerberg wrote:
> > Rick reported that his Pluggable USB4 dock does not work anymore after
> > upgrading to v6.10 kernel.
> > 
> > It looks like commit c6ca1ac9f472 ("thunderbolt: Increase sideband
> > access polling delay") makes the device router enumeration happen later
> > than what might be expected by the dock (although there is no such limit
> > in the USB4 spec) which probably makes it assume there is something
> > wrong with the high-speed link and reset it. After the link is reset the
> > same issue happens again and again.
> > 
> > For this reason lower the sideband access delay from 5ms to 1ms. This
> > seems to work fine according to Rick's testing.
> > 
> > Reported-by: Rick Lahaye <rick@581238.xyz>
> > Closes: https://lore.kernel.org/linux-usb/000f01db247b$d10e1520$732a3f60$@581238.xyz/
> > Tested-by: Rick Lahaye <rick@581238.xyz>
> > Fixes: c6ca1ac9f472 ("thunderbolt: Increase sideband access polling delay")
> > Cc: stable@vger.kernel.org
> > Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
> 
> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Thanks!

Applied to thunderbolt.git/fixes.