APPLIED[L/U]: [PATCH 0/6][SRU][Unstable/Lunar/OEM-6.1] Mediatek FM350-GL wwan module failed to init

[Andrea Righi]

On Mon, Jan 16, 2023 at 05:14:56PM +0800, You-Sheng Yang wrote:
> From: "You-Sheng Yang (vicamo)" <vicamo.yang at canonical.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/2002089
> 
> [Impact]
> 
> Mediatek FM350-GL wwan module failed to init: Invalid device status 0x1:
> 
>   [ 1.623253] mtk_t7xx 0000:71:00.0: enabling device (0000 -> 0002)
>   [ 3.632963] mtk_t7xx 0000:71:00.0: Invalid device status 0x1
> 
> [Fix]
> 
> The t7xx driver once received following fixes to complete its functions in
> v6.1-rc1:
> 
>   d20ef656f994 net: wwan: t7xx: Add AP CLDMA
>   007f26f0d68e net: wwan: t7xx: Infrastructure for early port configuration
>   140424d90165 net: wwan: t7xx: PCIe reset rescan
>   87dae9e70bf7 net: wwan: t7xx: Enable devlink based fw flashing and coredump
>                collection
>   b0bc1709b768 net: wwan: t7xx: Devlink documentation
> 
> However it was soon reverted for a second revision. Before that, in bug 1990700
> we need the first (reverted) patch "net: wwan: t7xx: Add AP CLDMA" to fix device
> suspend in a minimum level for development. Then, in this bug 2002089, a fully
> revised resubmission is now available.
> 
> An additional patch from v6.1, commit bb67012331f7 ("net: devlink:
> extend info_get() version put to indicate a flash component"), is
> necessary for oem-6.0 backport.
> 
> [Test Case]
> 
> Modprobe on new platforms that suffers this invalid device status issue,
> and run suspend/resume tests to ensure bug 1990700 is still in a good
> state.
> 
> [Where problems could occur]
> 
> This re-introduce the device firmware update support via devlink, so far
> it has been tested many times from 3rd party/vendor, but might still
> bump into platform compatibility issue as we have here.
> 
> [Other Info]
> 
> While this is only planned for oem-6.0/oem-6.1 and on, only U/L/OEM-6.x
> are nominated for fix.

Applied to lunar/linux and lunar/linux-unstable.

Thanks,
-Andrea