mbox series

[SRU,H/I/Unstable/OEM-5.13/OEM-5.14,0/2] Update fix for LP: #1936708

Message ID 20210908024235.663851-1-kai.heng.feng@canonical.com
Headers show
Series Update fix for LP: #1936708 | expand

Message

Kai-Heng Feng Sept. 8, 2021, 2:42 a.m. UTC 
BugLink: https://bugs.launchpad.net/bugs/1942972

[Impact]
There's a new fix for LP: #1936708, and it's more reliable than the
old approach. So replace it.

[Fix]
Use eDP as predicate to enable max params.

[Test]
Users confirmed the fix can resolve their issue.

[Where problems could occur]
This patch reverts to the old behavior, which is to use max parameters,
for older panels. If there's any new panel reports with older eDP
version, this might change the behavior on it.

Kai-Heng Feng (2):
  Revert "UBUNTU: SAUCE: drm/i915/dp: Use max params for older panels"
  drm/i915/dp: Use max params for panels < eDP 1.4

 drivers/gpu/drm/i915/display/intel_dp.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

Comments

Timo Aaltonen Sept. 13, 2021, 6:50 a.m. UTC | #1 
On 8.9.2021 5.42, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1942972
> 
> [Impact]
> There's a new fix for LP: #1936708, and it's more reliable than the
> old approach. So replace it.
> 
> [Fix]
> Use eDP as predicate to enable max params.
> 
> [Test]
> Users confirmed the fix can resolve their issue.
> 
> [Where problems could occur]
> This patch reverts to the old behavior, which is to use max parameters,
> for older panels. If there's any new panel reports with older eDP
> version, this might change the behavior on it.
> 
> Kai-Heng Feng (2):
>    Revert "UBUNTU: SAUCE: drm/i915/dp: Use max params for older panels"
>    drm/i915/dp: Use max params for panels < eDP 1.4
> 
>   drivers/gpu/drm/i915/display/intel_dp.c | 17 +++++++++--------
>   1 file changed, 9 insertions(+), 8 deletions(-)
> 

applied to oem-5.13/5.14, thanks
Andrea Righi Sept. 23, 2021, 8:24 a.m. UTC | #2 
On Wed, Sep 08, 2021 at 10:42:33AM +0800, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1942972
> 
> [Impact]
> There's a new fix for LP: #1936708, and it's more reliable than the
> old approach. So replace it.
> 
> [Fix]
> Use eDP as predicate to enable max params.
> 
> [Test]
> Users confirmed the fix can resolve their issue.
> 
> [Where problems could occur]
> This patch reverts to the old behavior, which is to use max parameters,
> for older panels. If there's any new panel reports with older eDP
> version, this might change the behavior on it.
> 
> Kai-Heng Feng (2):
>   Revert "UBUNTU: SAUCE: drm/i915/dp: Use max params for older panels"
>   drm/i915/dp: Use max params for panels < eDP 1.4

Updated SoB line and applied to impish/linux (5.13).

Thanks,
-Andrea
Kelsey Skunberg Sept. 23, 2021, 4:54 p.m. UTC | #3 
With the changed cherry-pick line Stefan suggested:

Acked-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>

On 2021-09-08 10:42:33 , Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1942972
> 
> [Impact]
> There's a new fix for LP: #1936708, and it's more reliable than the
> old approach. So replace it.
> 
> [Fix]
> Use eDP as predicate to enable max params.
> 
> [Test]
> Users confirmed the fix can resolve their issue.
> 
> [Where problems could occur]
> This patch reverts to the old behavior, which is to use max parameters,
> for older panels. If there's any new panel reports with older eDP
> version, this might change the behavior on it.
> 
> Kai-Heng Feng (2):
>   Revert "UBUNTU: SAUCE: drm/i915/dp: Use max params for older panels"
>   drm/i915/dp: Use max params for panels < eDP 1.4
> 
>  drivers/gpu/drm/i915/display/intel_dp.c | 17 +++++++++--------
>  1 file changed, 9 insertions(+), 8 deletions(-)
> 
> -- 
> 2.32.0
> 
> 
> -- 
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