Request to revert lt9611uxc fixes from v5.15.y

Request to revert lt9611uxc fixes from v5.15.y

[Amit Pundir]

Hi Greg,

The following lt9611uxc fixes in v5.15.139 broke display on RB5 devboard.

drm/bridge: lt9611uxc: fix the race in the error path
drm/bridge: lt9611uxc: Register and attach our DSI device at probe
drm/bridge: lt9611uxc: Switch to devm MIPI-DSI helpers

Reverting them (git revert -s d0d01bb4a560 29aba28ea195 f53a04579328
#5.15 SHA Ids) fix the following errors on RB5 and get the display
working again on v5.15.143.

lt9611uxc 5-002b: LT9611 revision: 0x17.04.93
lt9611uxc 5-002b: LT9611 version: 0x43
lt9611uxc 5-002b: failed to find dsi host
msm ae00000.mdss: bound ae01000.mdp (ops dpu_ops [msm])
msm_dsi_manager_register: failed to register mipi dsi host for DSI 0: -517

Regards,
Amit Pundir

Re: Request to revert lt9611uxc fixes from v5.15.y

[Greg Kroah-Hartman]

On Tue, Dec 19, 2023 at 01:54:59PM +0530, Amit Pundir wrote:
> Hi Greg,
> 
> The following lt9611uxc fixes in v5.15.139 broke display on RB5 devboard.
> 
> drm/bridge: lt9611uxc: fix the race in the error path
> drm/bridge: lt9611uxc: Register and attach our DSI device at probe
> drm/bridge: lt9611uxc: Switch to devm MIPI-DSI helpers
> 
> Reverting them (git revert -s d0d01bb4a560 29aba28ea195 f53a04579328
> #5.15 SHA Ids) fix the following errors on RB5 and get the display
> working again on v5.15.143.
> 
> lt9611uxc 5-002b: LT9611 revision: 0x17.04.93
> lt9611uxc 5-002b: LT9611 version: 0x43
> lt9611uxc 5-002b: failed to find dsi host
> msm ae00000.mdss: bound ae01000.mdp (ops dpu_ops [msm])
> msm_dsi_manager_register: failed to register mipi dsi host for DSI 0: -517

Great, can you send patches that do the reverts along with the reasoning
why the reverts are needed so that we can queue them up?

thanks,

greg k-h

Re: Request to revert lt9611uxc fixes from v5.15.y

[Amit Pundir]

On Tue, 19 Dec 2023 at 14:14, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> On Tue, Dec 19, 2023 at 01:54:59PM +0530, Amit Pundir wrote:
> > Hi Greg,
> >
> > The following lt9611uxc fixes in v5.15.139 broke display on RB5 devboard.
> >
> > drm/bridge: lt9611uxc: fix the race in the error path
> > drm/bridge: lt9611uxc: Register and attach our DSI device at probe
> > drm/bridge: lt9611uxc: Switch to devm MIPI-DSI helpers
> >
> > Reverting them (git revert -s d0d01bb4a560 29aba28ea195 f53a04579328
> > #5.15 SHA Ids) fix the following errors on RB5 and get the display
> > working again on v5.15.143.
> >
> > lt9611uxc 5-002b: LT9611 revision: 0x17.04.93
> > lt9611uxc 5-002b: LT9611 version: 0x43
> > lt9611uxc 5-002b: failed to find dsi host
> > msm ae00000.mdss: bound ae01000.mdp (ops dpu_ops [msm])
> > msm_dsi_manager_register: failed to register mipi dsi host for DSI 0: -517
>
> Great, can you send patches that do the reverts along with the reasoning
> why the reverts are needed so that we can queue them up?

On it.

>
> thanks,
>
> greg k-h