Arnd Bergmann 8d6cb2f7fb drm/drm_panel: fix export of drm_panel_of_backlight, try #3 ... Making this IS_REACHABLE() was still wrong, as that just determines whether the lower-level backlight code would be reachable from the panel driver. However, with CONFIG_DRM=y and CONFIG_BACKLIGHT_CLASS_DEVICE=m, the drm_panel_of_backlight is left out of drm_panel.o but the condition tells the driver that it is there, leading to multiple link errors such as ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-sitronix-st7701.ko] undefined! ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-sharp-ls043t1le01.ko] undefined! ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-seiko-43wvf1g.ko] undefined! ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-ronbo-rb070d30.ko] undefined! ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-rocktech-jh057n00900.ko] undefined! ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.ko] undefined! ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.ko] undefined! Change the condition to check for whether the function was actually part of the drm module. This version of the patch survived a few hundred randconfig builds, so I have a good feeling this might be the last one for the export. Fixes: 4a34a9dcec ("drm/drm_panel: Fix EXPORT of drm_panel_of_backlight() one more time") Fixes: 907aa265fd ("drm/drm_panel: fix EXPORT of drm_panel_of_backlight") Fixes: 152dbdeab1 ("drm/panel: add backlight support") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200107203231.920256-1-arnd@arndb.de		2020-01-12 21:16:30 +01:00
..
acpi	Merge branches 'acpi-utils', 'acpi-platform', 'acpi-video' and 'acpi-doc'	2019-11-26 10:30:49 +01:00
asm-generic	powerpc updates for 5.5 #2	2019-12-06 13:36:31 -08:00
clocksource
crypto
drm	drm/drm_panel: fix export of drm_panel_of_backlight, try #3	2020-01-12 21:16:30 +01:00
dt-bindings	ARM: Device-tree updates	2019-12-05 12:09:47 -08:00
keys	powerpc updates for 5.5	2019-11-30 14:35:43 -08:00
kunit
kvm
linux	Merge drm/drm-next into drm-misc-next	2020-01-06 10:35:33 +01:00
math-emu
media	drm main pull for 5.5-rc1	2019-11-27 17:45:48 -08:00
misc
net	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
pcmcia
ras
rdma	IB/core: Introduce rdma_user_mmap_entry_insert_range() API	2019-12-12 16:55:36 -05:00
scsi	scsi: target: iscsi: Wait for all commands to finish before freeing a session	2019-11-19 21:37:35 -05:00
soc	drm msm + fixes for 5.5-rc1	2019-12-06 10:28:09 -08:00
sound	ALSA: hda: Modify stream stripe mask only when needed	2019-12-03 07:46:30 +01:00
target
trace	This is a relatively quiet cycle for nfsd, mainly various bugfixes.	2019-12-07 16:56:00 -08:00
uapi	drm-misc-next for v5.6:	2020-01-03 11:43:44 +10:00
vdso
video
xen	dma-mapping updates for 5.5-rc1	2019-11-28 11:16:43 -08:00