# \[PATCH 2/3\] omapfb: Guard sysfs code under CONFIG\_FB\_DEVICE

- From: Chintan Patel \<hidden\>
- Date: 2025-12-09 04:28:22 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2025/12/3328046
- Thread: https://ratatoskr.run/linux-fbdev/2025/12/3328044/t.md

```text
omapfb implements multiple sysfs attributes for framebuffer rotation,
overlays, and debug information. These interfaces depend on FB_DEVICE
being enabled.

This patch wraps all sysfs attribute definitions, registration, and
removal in #ifdef CONFIG_FB_DEVICE. For FB_DEVICE=n, lightweight stub
functions are provided so that the driver builds and runs without
exposing sysfs interfaces.

Signed-off-by: Chintan Patel <redacted>
---
 drivers/video/fbdev/omap2/omapfb/Kconfig        |  2 +-
 drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/omap2/omapfb/Kconfig b/drivers/video/fbdev/omap2/omapfb/Kconfig
index f4cdf999a080..ee664decbb64 100644
--- a/drivers/video/fbdev/omap2/omapfb/Kconfig
+++ b/drivers/video/fbdev/omap2/omapfb/Kconfig
@@ -5,7 +5,6 @@ config OMAP2_VRFB
 menuconfig FB_OMAP2
 	tristate "OMAP2+ frame buffer support"
 	depends on FB
-	depends on FB_DEVICE
 	depends on DRM_OMAP = n
 	depends on GPIOLIB
 	select FB_OMAP2_DSS
@@ -13,6 +12,7 @@ menuconfig FB_OMAP2
 	select FB_IOMEM_HELPERS
 	help
 	  Frame buffer driver for OMAP2+ based boards.
+	  Selecting FB_DEVICE enables additional sysfs interfaces.
 
 if FB_OMAP2
 
diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c b/drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c
index 831b2c2fbdf9..0a340f69484f 100644
--- a/drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c
+++ b/drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c
@@ -24,6 +24,7 @@
 
 #include "omapfb.h"
 
+#ifdef CONFIG_FB_DEVICE
 static ssize_t show_rotate_type(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
@@ -585,4 +586,14 @@ void omapfb_remove_sysfs(struct omapfb2_device *fbdev)
 					&omapfb_attrs[t]);
 	}
 }
+#else
+int omapfb_create_sysfs(struct omapfb2_device *fbdev)
+{
+	return 0;
+}
+
+void omapfb_remove_sysfs(struct omapfb2_device *fbdev)
+{
+}
+#endif
 
-- 
2.43.0

```