APPLIED(unstable): [SRU] [D/E/Unstable] [PATCH 0/3] Sync intel-lpss workaround with upstream version

Andrea Righi andrea.righi at canonical.com
Thu Nov 28 13:56:22 UTC 2019


On Tue, Nov 26, 2019 at 01:03:03PM +0800, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1851901
> 
> [Impact]
> On new Intel SoC, blacklisting intel-lpss or noapic is needed to make
> system boot. Touchpad doesn't work as a side effect.
> 
> [Fix]
> Write-comining doesn't work for intel-lpss, force it to use uncachable
> memory region.
> 
> [Test]
> User confirmed with the patch series the noapic or blacklisting
> intel-lpss can be removed. System boot with a working touchpad.
> 
> [Regression Potenial]
> Low. Tested on several older Intel laptops, still work without any
> issue.
> 
> 
> Kai-Heng Feng (1):
>   Revert "UBUNTU: SAUCE: mfd: intel-lpss: add quirk for Dell XPS 13 7390
>     2-in-1"
> 
> Tuowen Zhao (2):
>   lib: devres: add a helper function for ioremap_uc
>   mfd: intel-lpss: Use devm_ioremap_uc for MMIO
> 
>  drivers/mfd/intel-lpss.c | 20 ++------------------
>  lib/devres.c             |  3 +--
>  2 files changed, 3 insertions(+), 20 deletions(-)
> 
> -- 
> 2.17.1
> 
> 
> -- 
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