APPLIED: [SRU][R:linux-raspi][PATCH v2 0/1] Fix edatec-panel-regulator backlight power state restoration

Manuel Diewald manuel.diewald at canonical.com
Tue Aug 11 07:55:52 UTC 2026


On Mon, Jul 13, 2026 at 04:45:22PM +1000, Yufeng Gao via kernel-team wrote:
> BugLink: https://bugs.launchpad.net/bugs/2158944
> 
> SRU Justification
> 
> [Impact]
> 
> When EDATEC Pi CM5 devices with 7-inch screens resume from screen off, a white glow
> appears around the screen for around 5 seconds before disappearing. EDATEC determined
> this to be caused by a backlight power state restoration bug.
> 
> [Fix]
> 
> Pull the fix from upstream Raspberry Pi tree (rpi-7.0.y branch):
>   - ab523ceeb3599 regulator: edatec-panel-regulator: Fix backlight power state restoration
> 
> [Test Plan]
> 
> * Compile tested
> * Boot tested
> * No impacts to existing features found
> 
> Install the built packages and the correct config.txt, reboot the machine and the 7"
> display should no longer display a white glow when the screen lights up.
> 
> [Regression potential]
> 
> Relatively low, as change is a bug fix from upstream.
> 
> FrankLeeEDA (1):
>   regulator: edatec-panel-regulator: Fix backlight power state
>     restoration
> 
>  drivers/regulator/edatec-panel-regulator.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> -- 
> 2.43.0
> 
> 
> -- 
> kernel-team mailing list
> kernel-team at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team

Applied to resolute:linux-raspi/master-next. Thanks!

-- 
 Manuel
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