linux-kernel - [PATCH 5.12 019/677] drm: bridge: fix LONTIUM use of mipi_dsi

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Date:   Wed, 12 May 2021 16:41:05 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Adren Grassein <adrien.grassein@...il.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>,
        Robert Foss <robert.foss@...aro.org>,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH 5.12 019/677] drm: bridge: fix LONTIUM use of mipi_dsi_() functions

From: Randy Dunlap <rdunlap@...radead.org>

commit ad085b3a712a89e4a48472121b231add7a8362e4 upstream.

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")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Reviewed-by: Adren Grassein <adrien.grassein@...il.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
Signed-off-by: Robert Foss <robert.foss@...aro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210415183639.1487-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/bridge/Kconfig |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -67,6 +67,7 @@ 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
@@ -151,6 +152,7 @@ config DRM_SII902X
 	tristate "Silicon Image sii902x RGB/HDMI bridge"
 	depends on OF
 	select DRM_KMS_HELPER
+	select DRM_MIPI_DSI
 	select REGMAP_I2C
 	select I2C_MUX
 	select SND_SOC_HDMI_CODEC if SND_SOC
@@ -200,6 +202,7 @@ config DRM_TOSHIBA_TC358767
 	tristate "Toshiba TC358767 eDP bridge"
 	depends on OF
 	select DRM_KMS_HELPER
+	select DRM_MIPI_DSI
 	select REGMAP_I2C
 	select DRM_PANEL
 	help