linux-kernel - Re: [PATCH] thunderbolt: Reduce retry timeout to speed up boot for some devices

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Date: Wed, 20 Dec 2023 17:04:35 +0100
From: Greg KH <greg@...ah.com>
To: Werner Sembach <wse@...edocomputers.com>
Cc: Andreas Noever <andreas.noever@...il.com>,
	Michael Jamet <michael.jamet@...el.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Yehezkel Bernat <YehezkelShB@...il.com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] thunderbolt: Reduce retry timeout to speed up boot for
 some devices

On Wed, Dec 20, 2023 at 04:23:15PM +0100, Werner Sembach wrote:
> Am 20.12.23 um 16:09 schrieb Werner Sembach:
> > This is a followup to "thunderbolt: Workaround an IOMMU fault on certain
> > systems with Intel Maple Ridge".
> > 
> > It seems like the timeout can be reduced to 250ms. This reduces the overall
> > delay caused by the retires to ~1s. This is about the time other things
> > being initialized in parallel need anyway*, so like this the effective boot
> > time is no longer compromised.
> > 
> > *I only had a single device available for my measurements: A Clevo X170KM-G
> > desktop replacement notebook.
> > 
> > Signed-off-by: Werner Sembach <wse@...edocomputers.com>
> I wonder if this could also land in stable? Or would it be to risky?

If it's really a bugfix now, why would it _not_ be relevant for stable?

thanks,

greg k-h