[0/1,SRU,B] PCI: Restore resized BAR state on resume
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Message ID 20190423095040.20862-1-vicamo.yang@canonical.com
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  • PCI: Restore resized BAR state on resume
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You-Sheng Yang April 23, 2019, 9:50 a.m. UTC
BugLink: https://bugs.launchpad.net/bugs/1825958

[Impact]
Multiple amdgpu equipped platforms have screen freeze when resumed from
S3.

[Fix]
d3252ace0bc6 PCI: Restore resized BAR state on resume

This was landed to vanilla kernel v4.19 and has also been SRU-ed to
Cosmic.

[Reproduce Steps]
1. Plugged the HDMI monitor and boot
2. Enter S3 and resume from S3
3. The screen is frozen during login screen

[Regression Risk]
Low. Included in stable kernel v4.18.5 and is already in Cosmic as well.

Christian König (1):
  PCI: Restore resized BAR state on resume

 drivers/pci/pci.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

Comments

AceLan Kao April 27, 2019, 2:35 a.m. UTC | #1
Applied on Ubuntu-oem-4.15.0-1037.42

Acked-By: AceLan Kao <acelan.kao@canonical.com>
Kleber Souza May 3, 2019, 3:20 p.m. UTC | #2
On 4/23/19 11:50 AM, You-Sheng Yang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1825958
> 
> [Impact]
> Multiple amdgpu equipped platforms have screen freeze when resumed from
> S3.
> 
> [Fix]
> d3252ace0bc6 PCI: Restore resized BAR state on resume
> 
> This was landed to vanilla kernel v4.19 and has also been SRU-ed to
> Cosmic.
> 
> [Reproduce Steps]
> 1. Plugged the HDMI monitor and boot
> 2. Enter S3 and resume from S3
> 3. The screen is frozen during login screen
> 
> [Regression Risk]
> Low. Included in stable kernel v4.18.5 and is already in Cosmic as well.
> 
> Christian König (1):
>   PCI: Restore resized BAR state on resume
> 
>  drivers/pci/pci.c | 28 ++++++++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
> 

Already on Disco and Cosmic, and on stable v4.17+ for some time
already.

Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Kleber Souza May 7, 2019, 9:18 a.m. UTC | #3
On 4/23/19 11:50 AM, You-Sheng Yang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1825958
> 
> [Impact]
> Multiple amdgpu equipped platforms have screen freeze when resumed from
> S3.
> 
> [Fix]
> d3252ace0bc6 PCI: Restore resized BAR state on resume
> 
> This was landed to vanilla kernel v4.19 and has also been SRU-ed to
> Cosmic.
> 
> [Reproduce Steps]
> 1. Plugged the HDMI monitor and boot
> 2. Enter S3 and resume from S3
> 3. The screen is frozen during login screen
> 
> [Regression Risk]
> Low. Included in stable kernel v4.18.5 and is already in Cosmic as well.
> 
> Christian König (1):
>   PCI: Restore resized BAR state on resume
> 
>  drivers/pci/pci.c | 28 ++++++++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
> 

Applied to bionic/master-next branch.

Thanks,
Kleber