From: Arnd Bergmann <arnd@arndb.de>
To: Maxime Ripard <maxime.ripard@bootlin.com>, Chen-Yu Tsai <wens@csie.org>
Cc: Arnd Bergmann <arnd@arndb.de>, David Airlie <airlied@linux.ie>,
Jernej Skrabec <jernej.skrabec@siol.net>,
Icenowy Zheng <icenowy@aosc.io>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jonathan Liu <net147@gmail.com>,
dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] drm/sun4i: link in front-end code if needed
Date: Fri, 23 Feb 2018 14:06:52 +0100 [thread overview]
Message-ID: <20180223131112.715992-1-arnd@arndb.de> (raw)
When the base sun4i DRM driver is built-in but the back-end is
a loadable module, we run into a link error:
drivers/gpu/drm/sun4i/sun4i_drv.o: In function `sun4i_drv_probe':
sun4i_drv.c:(.text+0x60c): undefined reference to `sun4i_frontend_of_table'
The dependency is a bit tricky, the best workaround I have come up
with is to use a Makefile hack to to interpret both
CONFIG_DRM_SUN4I_BACKEND=m and CONFIG_DRM_SUN4I_BACKEND=y
as a directive to build the front-end the same way as the main module.
Fixes: dd0421f47505 ("drm/sun4i: Add a driver for the display frontend")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/gpu/drm/sun4i/Makefile | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/sun4i/Makefile b/drivers/gpu/drm/sun4i/Makefile
index 582607c0c488..db14e023256b 100644
--- a/drivers/gpu/drm/sun4i/Makefile
+++ b/drivers/gpu/drm/sun4i/Makefile
@@ -25,6 +25,9 @@ obj-$(CONFIG_DRM_SUN4I) += sun4i-tcon.o
obj-$(CONFIG_DRM_SUN4I) += sun4i_tv.o
obj-$(CONFIG_DRM_SUN4I) += sun6i_drc.o
-obj-$(CONFIG_DRM_SUN4I_BACKEND) += sun4i-backend.o sun4i-frontend.o
+obj-$(CONFIG_DRM_SUN4I_BACKEND) += sun4i-backend.o
+ifdef CONFIG_DRM_SUN4I_BACKEND
+obj-$(CONFIG_DRM_SUN4I) += sun4i-frontend.o
+endif
obj-$(CONFIG_DRM_SUN4I_HDMI) += sun4i-drm-hdmi.o
obj-$(CONFIG_DRM_SUN8I_MIXER) += sun8i-mixer.o
--
2.9.0
WARNING: multiple messages have this Message-ID (diff)
From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] drm/sun4i: link in front-end code if needed
Date: Fri, 23 Feb 2018 14:06:52 +0100 [thread overview]
Message-ID: <20180223131112.715992-1-arnd@arndb.de> (raw)
When the base sun4i DRM driver is built-in but the back-end is
a loadable module, we run into a link error:
drivers/gpu/drm/sun4i/sun4i_drv.o: In function `sun4i_drv_probe':
sun4i_drv.c:(.text+0x60c): undefined reference to `sun4i_frontend_of_table'
The dependency is a bit tricky, the best workaround I have come up
with is to use a Makefile hack to to interpret both
CONFIG_DRM_SUN4I_BACKEND=m and CONFIG_DRM_SUN4I_BACKEND=y
as a directive to build the front-end the same way as the main module.
Fixes: dd0421f47505 ("drm/sun4i: Add a driver for the display frontend")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/gpu/drm/sun4i/Makefile | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/sun4i/Makefile b/drivers/gpu/drm/sun4i/Makefile
index 582607c0c488..db14e023256b 100644
--- a/drivers/gpu/drm/sun4i/Makefile
+++ b/drivers/gpu/drm/sun4i/Makefile
@@ -25,6 +25,9 @@ obj-$(CONFIG_DRM_SUN4I) += sun4i-tcon.o
obj-$(CONFIG_DRM_SUN4I) += sun4i_tv.o
obj-$(CONFIG_DRM_SUN4I) += sun6i_drc.o
-obj-$(CONFIG_DRM_SUN4I_BACKEND) += sun4i-backend.o sun4i-frontend.o
+obj-$(CONFIG_DRM_SUN4I_BACKEND) += sun4i-backend.o
+ifdef CONFIG_DRM_SUN4I_BACKEND
+obj-$(CONFIG_DRM_SUN4I) += sun4i-frontend.o
+endif
obj-$(CONFIG_DRM_SUN4I_HDMI) += sun4i-drm-hdmi.o
obj-$(CONFIG_DRM_SUN8I_MIXER) += sun8i-mixer.o
--
2.9.0
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: Maxime Ripard <maxime.ripard@bootlin.com>, Chen-Yu Tsai <wens@csie.org>
Cc: Jernej Skrabec <jernej.skrabec@siol.net>,
Arnd Bergmann <arnd@arndb.de>, David Airlie <airlied@linux.ie>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jonathan Liu <net147@gmail.com>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Icenowy Zheng <icenowy@aosc.io>
Subject: [PATCH] drm/sun4i: link in front-end code if needed
Date: Fri, 23 Feb 2018 14:06:52 +0100 [thread overview]
Message-ID: <20180223131112.715992-1-arnd@arndb.de> (raw)
When the base sun4i DRM driver is built-in but the back-end is
a loadable module, we run into a link error:
drivers/gpu/drm/sun4i/sun4i_drv.o: In function `sun4i_drv_probe':
sun4i_drv.c:(.text+0x60c): undefined reference to `sun4i_frontend_of_table'
The dependency is a bit tricky, the best workaround I have come up
with is to use a Makefile hack to to interpret both
CONFIG_DRM_SUN4I_BACKEND=m and CONFIG_DRM_SUN4I_BACKEND=y
as a directive to build the front-end the same way as the main module.
Fixes: dd0421f47505 ("drm/sun4i: Add a driver for the display frontend")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/gpu/drm/sun4i/Makefile | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/sun4i/Makefile b/drivers/gpu/drm/sun4i/Makefile
index 582607c0c488..db14e023256b 100644
--- a/drivers/gpu/drm/sun4i/Makefile
+++ b/drivers/gpu/drm/sun4i/Makefile
@@ -25,6 +25,9 @@ obj-$(CONFIG_DRM_SUN4I) += sun4i-tcon.o
obj-$(CONFIG_DRM_SUN4I) += sun4i_tv.o
obj-$(CONFIG_DRM_SUN4I) += sun6i_drc.o
-obj-$(CONFIG_DRM_SUN4I_BACKEND) += sun4i-backend.o sun4i-frontend.o
+obj-$(CONFIG_DRM_SUN4I_BACKEND) += sun4i-backend.o
+ifdef CONFIG_DRM_SUN4I_BACKEND
+obj-$(CONFIG_DRM_SUN4I) += sun4i-frontend.o
+endif
obj-$(CONFIG_DRM_SUN4I_HDMI) += sun4i-drm-hdmi.o
obj-$(CONFIG_DRM_SUN8I_MIXER) += sun8i-mixer.o
--
2.9.0
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next reply other threads:[~2018-02-23 13:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-23 13:06 Arnd Bergmann [this message]
2018-02-23 13:06 ` [PATCH] drm/sun4i: link in front-end code if needed Arnd Bergmann
2018-02-23 13:06 ` Arnd Bergmann
2018-02-26 9:21 ` Maxime Ripard
2018-02-26 9:21 ` Maxime Ripard
2018-02-26 9:21 ` Maxime Ripard
2018-02-26 9:31 ` Arnd Bergmann
2018-02-26 9:31 ` Arnd Bergmann
2018-02-26 9:31 ` Arnd Bergmann
2018-02-26 10:53 ` Maxime Ripard
2018-02-26 10:53 ` Maxime Ripard
2018-02-26 10:53 ` Maxime Ripard
2018-02-26 10:55 ` Chen-Yu Tsai
2018-02-26 10:55 ` Chen-Yu Tsai
2018-03-01 9:19 ` Maxime Ripard
2018-03-01 9:19 ` Maxime Ripard
2018-03-01 9:19 ` Maxime Ripard
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