[PATCH v3 01/16] drm/mst: remove mgr parameter and debug logging from drm_dp_get_vc_payload_bw()

Maxime Ripard mripard at kernel.org
Tue Jan 7 15:14:33 UTC 2025


On Tue, Jan 07, 2025 at 11:55:42AM +0200, Jani Nikula wrote:
> On Fri, 03 Jan 2025, Jani Nikula <jani.nikula at intel.com> wrote:
> > The struct drm_dp_mst_topology_mgr *mgr parameter is only used for debug
> > logging in case the passed in link rate or lane count are zero. There's
> > no further error checking as such, and the function returns 0.
> >
> > There should be no case where the parameters are zero. The returned
> > value is generally used as a divisor, and if we were hitting this, we'd
> > be seeing division by zero.
> >
> > Just remove the debug logging altogether, along with the mgr parameter,
> > so that the function can be used in non-MST contexts without the
> > topology manager.
> >
> > v2: Also remove drm_dp_mst_helper_tests_init as unnecessary (Imre)
> >
> > Cc: Imre Deak <imre.deak at intel.com>
> > Cc: Lyude Paul <lyude at redhat.com>
> > Reviewed-by: Imre Deak <imre.deak at intel.com>
> > Signed-off-by: Jani Nikula <jani.nikula at intel.com>
> 
> Maarten, Maxime, Thomas, ack for merging this via drm-intel along with
> the rest of the series?

Ack

Maxime
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