APPLIED[B]/Cmnt: [SRU] [Bionic/Cosmic/Unstable] [PATCH 0/1] Fix unusable NVIDIA GPU after S3

[Stefan Bader]

On 19.09.2018 17:29, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1793338
> 
> [Impact]
> NVIDIA GPU on a new system we have becomes unusable after S3.
> 
> [Test]
> The NVIDIA GPU in question works well after applying this patch.
> 
> [Fix]
> Rewrite 0 to Intel PCI bridge 'Prefetchable Base Upper 32 Bits'.
> This should be done by BIOS S3 code [1], but now the issue reappears, let's
> do the same in Linux PCI subsystem.
> 
> [Regression Potential]
> Low.
> After applying this patch I haven't noticed any change on already
> working PCI devices.
> Also this patch is acked by PCI and ACPI maintainers, so we can be more
> confident.
> 
> [1] https://bugzilla.kernel.org/show_bug.cgi?id=116851#c23
> 
> Daniel Drake (1):
>   PCI: Reprogram bridge prefetch registers on resume
> 
>  drivers/pci/pci.c | 27 +++++++++++++++++++--------
>  1 file changed, 19 insertions(+), 8 deletions(-)
> 

As Kleber mentioned this was queued for 4.19 and is already on linux-next. So I
replaced the pick by the one from linux-next (it appeared to be identical).

Applied to bionic/master-next. Thanks.

-Stefan

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