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defconfigs: Drop FB_UDL from all Pi defconfigs
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CONFIG_FB_UBL is the fbdev driver for DisplayLink USB displays.
CONFIG_UDL is the DRM driver for DisplayLink USB displays.

Both attach themselves to the same USB device alias, so both
get loaded for any attached display. You now have 2 drivers for
the same hardware, and a race as to which one will load.

DRM emulates the framebuffer interface, so disable the fbdev
driver.

raspberrypi/bookworm-feedback#133

Signed-off-by: Dave Stevenson <[email protected]>
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@6by9
6by9 committed Nov 8, 2023
1 parent 686fe77 commit 97f63b5
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Showing 6 changed files with 0 additions and 6 deletions.
1 change: 0 additions & 1 deletion arch/arm/configs/bcm2709_defconfig
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Expand Up @@ -974,7 +974,6 @@ CONFIG_TINYDRM_ST7735R=m
CONFIG_DRM_GUD=m
CONFIG_FB=y
CONFIG_FB_BCM2708=y
CONFIG_FB_UDL=m
CONFIG_FB_SIMPLE=y
CONFIG_FB_SSD1307=m
CONFIG_FB_RPISENSE=m
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1 change: 0 additions & 1 deletion arch/arm/configs/bcm2711_defconfig
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Expand Up @@ -993,7 +993,6 @@ CONFIG_TINYDRM_ST7735R=m
CONFIG_DRM_GUD=m
CONFIG_FB=y
CONFIG_FB_BCM2708=y
CONFIG_FB_UDL=m
CONFIG_FB_SIMPLE=y
CONFIG_FB_SSD1307=m
CONFIG_FB_RPISENSE=m
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1 change: 0 additions & 1 deletion arch/arm/configs/bcmrpi_defconfig
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Expand Up @@ -968,7 +968,6 @@ CONFIG_TINYDRM_ST7735R=m
CONFIG_DRM_GUD=m
CONFIG_FB=y
CONFIG_FB_BCM2708=y
CONFIG_FB_UDL=m
CONFIG_FB_SIMPLE=y
CONFIG_FB_SSD1307=m
CONFIG_FB_RPISENSE=m
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1 change: 0 additions & 1 deletion arch/arm64/configs/bcm2711_defconfig
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Expand Up @@ -1030,7 +1030,6 @@ CONFIG_TINYDRM_ST7735R=m
CONFIG_DRM_GUD=m
CONFIG_FB=y
CONFIG_FB_BCM2708=y
CONFIG_FB_UDL=m
CONFIG_FB_SIMPLE=y
CONFIG_FB_SSD1307=m
CONFIG_FB_RPISENSE=m
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1 change: 0 additions & 1 deletion arch/arm64/configs/bcm2712_defconfig
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Expand Up @@ -1033,7 +1033,6 @@ CONFIG_TINYDRM_ST7735R=m
CONFIG_DRM_GUD=m
CONFIG_FB=y
CONFIG_FB_BCM2708=y
CONFIG_FB_UDL=m
CONFIG_FB_SIMPLE=y
CONFIG_FB_SSD1307=m
CONFIG_FB_RPISENSE=m
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1 change: 0 additions & 1 deletion arch/arm64/configs/bcmrpi3_defconfig
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Expand Up @@ -944,7 +944,6 @@ CONFIG_TINYDRM_ST7735R=m
CONFIG_DRM_GUD=m
CONFIG_FB=y
CONFIG_FB_BCM2708=y
CONFIG_FB_UDL=m
CONFIG_FB_SIMPLE=y
CONFIG_FB_SSD1307=m
CONFIG_FB_RPISENSE=m
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