[PATCH 12/13] drm/amd/display: Fix a typo in revert commit

[Li, Roman]

[Public]

Thank you, Jiri, for your feedback.
I've dropped this patch from DC v.3.2.297.
We will  follow-up on this separately and merge it after you do confirm the issue you reported is fixed.

Thanks,
Roman

> -----Original Message-----
> From: Jiri Slaby <jirislaby at kernel.org>
> Sent: Monday, August 19, 2024 4:37 AM
> To: Li, Roman <Roman.Li at amd.com>; amd-gfx at lists.freedesktop.org
> Cc: Wentland, Harry <Harry.Wentland at amd.com>; Li, Sun peng (Leo)
> <Sunpeng.Li at amd.com>; Siqueira, Rodrigo <Rodrigo.Siqueira at amd.com>;
> Pillai, Aurabindo <Aurabindo.Pillai at amd.com>; Lin, Wayne
> <Wayne.Lin at amd.com>; Gutierrez, Agustin <Agustin.Gutierrez at amd.com>;
> Chung, ChiaHsuan (Tom) <ChiaHsuan.Chung at amd.com>; Zuo, Jerry
> <Jerry.Zuo at amd.com>; Mohamed, Zaeem <Zaeem.Mohamed at amd.com>
> Subject: Re: RE: [PATCH 12/13] drm/amd/display: Fix a typo in revert commit
>
> On 16. 08. 24, 21:30, Li, Roman wrote:
> > [Public]
> >
> > Wiil update commit message as:
> >
> > -------------
> > drm/amd/display: Fix MST DSC lightup
> >
> > [Why]
> > Secondary monitor does not come up due to MST DSC bw calculation
> regression.
>
> This patch is only related to this. It does not fix that issue on its own at all.
>
> > [How]
> > Fix bug in try_disable_dsc()
>
> This update is worse than the original, IMO.
>
> Could you write saner commit logs in the whole amdgpu overall?
>
> If you insist on those [why] and [how] parts, something like:
> """
> [Why]
> The linked commit below misreverted one hunk in try_disable_dsc().
>
> [How]
> Fix that by using proper (original) 'max_kbps' instead of bogus 'stream_kbps'.
> ""
>
> > Fixes: 4b6564cb120c ("drm/amd/display: Fix MST BW calculation
> > Regression")
> >
> > Cc: mario.limonciello at amd.com
> > Cc: alexander.deucher at amd.com
> > Cc: stable at vger.kernel.org
> > Reported-by: jirislaby at kernel.org
>
> Care to fix up your machinery so that listed people are really CCed? I received a
> copy of neither the original (4b6564cb120c), nor this one.
>
> Nor any mentions in the linked #3495 at all.
>
> I would have told you that 4b6564cb120c is bogus. Immediately when it hit
> me as it differs from our (SUSE) in-tree revert in exactly this hunk. If I have
> known about this in the first place...
>
> And you would have received a Tested-by if it had worked.
>
> Given all the above, amdgpu workflow appears to be very ill. Please fix it.
>
> > Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3495
> > Closes: https://bugzilla.suse.com/show_bug.cgi?id=1228093
> > Reviewed-by: Roman Li <roman.li at amd.com>
> > Signed-off-by: Fangzhi Zuo <Jerry.Zuo at amd.com>
> > Signed-off-by: Roman Li <roman.li at amd.com>
> > Tested-by: Daniel Wheeler <daniel.wheeler at amd.com>
> >
> >
> >> -----Original Message-----
> >> From: Roman.Li at amd.com <Roman.Li at amd.com>
> >> Sent: Thursday, August 15, 2024 6:45 PM
> >> To: amd-gfx at lists.freedesktop.org
> >> Cc: Wentland, Harry <Harry.Wentland at amd.com>; Li, Sun peng (Leo)
> >> <Sunpeng.Li at amd.com>; Siqueira, Rodrigo <Rodrigo.Siqueira at amd.com>;
> >> Pillai, Aurabindo <Aurabindo.Pillai at amd.com>; Li, Roman
> >> <Roman.Li at amd.com>; Lin, Wayne <Wayne.Lin at amd.com>; Gutierrez,
> >> Agustin <Agustin.Gutierrez at amd.com>; Chung, ChiaHsuan (Tom)
> >> <ChiaHsuan.Chung at amd.com>; Zuo, Jerry <Jerry.Zuo at amd.com>;
> Mohamed,
> >> Zaeem <Zaeem.Mohamed at amd.com>; Zuo, Jerry <Jerry.Zuo at amd.com>
> >> Subject: [PATCH 12/13] drm/amd/display: Fix a typo in revert commit
> >>
> >> From: Fangzhi Zuo <Jerry.Zuo at amd.com>
> >>
> >> A typo is fixed for "drm/amd/display: Fix MST BW calculation Regression"
> >>
> >> Fixes: 4b6564cb120c ("drm/amd/display: Fix MST BW calculation
> >> Regression")
> >>
> >> Reviewed-by: Roman Li <roman.li at amd.com>
> >> Signed-off-by: Fangzhi Zuo <Jerry.Zuo at amd.com>
> >> Signed-off-by: Roman Li <roman.li at amd.com>
> >> ---
> >>   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c |
> 2 +-
> >>   1 file changed, 1 insertion(+), 1 deletion(-)
> >>
> >> diff --git
> >> a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> >> b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> >> index 958fad0d5307..5e08ca700c3f 100644
> >> ---
> a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> >> +++
> b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> >> @@ -1066,7 +1066,7 @@ static int try_disable_dsc(struct
> >> drm_atomic_state *state,
> >>                        vars[next_index].dsc_enabled = false;
> >>                        vars[next_index].bpp_x16 = 0;
> >>                } else {
> >> -                     vars[next_index].pbn =
> >> kbps_to_peak_pbn(params[next_index].bw_range.stream_kbps,
> >> fec_overhead_multiplier_x1000);
> >> +                     vars[next_index].pbn =
> >> kbps_to_peak_pbn(params[next_index].bw_range.max_kbps,
> >> fec_overhead_multiplier_x1000);
> >>                        ret = drm_dp_atomic_find_time_slots(state,
> >>
> >> params[next_index].port->mgr,
> >>
> >> params[next_index].port,
>
>
> thanks,
> --
> js
> suse labs