linux-kernel - Re: [PATCH -next] drm: bridge: fix LONTIUM use of mipi_dsi

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Message-ID: <CAG3jFyuty4pVzd+6+tFgKtmAE06dOtz1AwnZRefQD9F7bvbKGQ@mail.gmail.com>
Date:   Fri, 16 Apr 2021 11:14:15 +0200
From:   Robert Foss <robert.foss@...aro.org>
To:     Adrien Grassein <adrien.grassein@...il.com>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        kernel test robot <lkp@...el.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sam Ravnborg <sam@...nborg.org>, Vinod Koul <vkoul@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        stable@...r.kernel.org
Subject: Re: [PATCH -next] drm: bridge: fix LONTIUM use of mipi_dsi_() functions

Merged for 5.13 in drm-misc-next-fixes

On Thu, 15 Apr 2021 at 21:36, Adrien Grassein <adrien.grassein@...il.com> wrote:
>
> Reviewed-by: Adren Grassein <adrien.grassein@...il.com>
>
> Le jeu. 15 avr. 2021 à 20:36, Randy Dunlap <rdunlap@...radead.org> a écrit :
> >
> > The Lontium DRM bridge drivers use mipi_dsi_() function interfaces so
> > they need to select DRM_MIPI_DSI to prevent build errors.
> >
> > ERROR: modpost: "mipi_dsi_attach" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!
> > ERROR: modpost: "mipi_dsi_device_register_full" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!
> > ERROR: modpost: "of_find_mipi_dsi_host_by_node" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!
> > ERROR: modpost: "mipi_dsi_device_unregister" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!
> > ERROR: modpost: "mipi_dsi_detach" [drivers/gpu/drm/bridge/lontium-lt9611uxc.ko] undefined!
> > ERROR: modpost: "mipi_dsi_attach" [drivers/gpu/drm/bridge/lontium-lt9611.ko] undefined!
> > ERROR: modpost: "mipi_dsi_device_register_full" [drivers/gpu/drm/bridge/lontium-lt9611.ko] undefined!
> > ERROR: modpost: "of_find_mipi_dsi_host_by_node" [drivers/gpu/drm/bridge/lontium-lt9611.ko] undefined!
> > ERROR: modpost: "mipi_dsi_device_unregister" [drivers/gpu/drm/bridge/lontium-lt9611.ko] undefined!
> > ERROR: modpost: "mipi_dsi_detach" [drivers/gpu/drm/bridge/lontium-lt9611.ko] undefined!
> > WARNING: modpost: suppressed 5 unresolved symbol warnings because there were too many)
> >
> > Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
> > Fixes: 0cbbd5b1a012 ("drm: bridge: add support for lontium LT9611UXC bridge")
> > Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
> > Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> > Reported-by: kernel test robot <lkp@...el.com>
> > Cc: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> > Cc: Sam Ravnborg <sam@...nborg.org>
> > Cc: Vinod Koul <vkoul@...nel.org>
> > Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
> > Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> > Cc: Adrien Grassein <adrien.grassein@...il.com>
> > Cc: Andrzej Hajda <a.hajda@...sung.com>
> > Cc: Neil Armstrong <narmstrong@...libre.com>
> > Cc: Robert Foss <robert.foss@...aro.org>
> > Cc: dri-devel@...ts.freedesktop.org
> > Cc: stable@...r.kernel.org
> > ---
> >  drivers/gpu/drm/bridge/Kconfig |    3 +++
> >  1 file changed, 3 insertions(+)
> >
> > --- linux-next-20210414.orig/drivers/gpu/drm/bridge/Kconfig
> > +++ linux-next-20210414/drivers/gpu/drm/bridge/Kconfig
> > @@ -66,6 +66,7 @@ config DRM_LONTIUM_LT8912B
> >         depends on OF
> >         select DRM_PANEL_BRIDGE
> >         select DRM_KMS_HELPER
> > +       select DRM_MIPI_DSI
> >         select REGMAP_I2C
> >         help
> >           Driver for Lontium LT8912B DSI to HDMI bridge
> > @@ -81,6 +82,7 @@ config DRM_LONTIUM_LT9611
> >         depends on OF
> >         select DRM_PANEL_BRIDGE
> >         select DRM_KMS_HELPER
> > +       select DRM_MIPI_DSI
> >         select REGMAP_I2C
> >         help
> >           Driver for Lontium LT9611 DSI to HDMI bridge
> > @@ -94,6 +96,7 @@ config DRM_LONTIUM_LT9611UXC
> >         depends on OF
> >         select DRM_PANEL_BRIDGE
> >         select DRM_KMS_HELPER
> > +       select DRM_MIPI_DSI
> >         select REGMAP_I2C
> >         help
> >           Driver for Lontium LT9611UXC DSI to HDMI bridge