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Subject: [media] Input: atmel_mxt: disallow impossible configuration Author: Arnd Bergmann <a...@arndb.de> Date: Mon Sep 12 12:30:32 2016 -0300 The newnly added debug mode for the atmel_mxt_ts driver relies on the v4l2 interface and vb2_vmalloc, but those might be configured as loadable modules when the driver itself is built-in, resulting in a link failure: drivers/input/touchscreen/atmel_mxt_ts.o: In function `mxt_vidioc_querycap': atmel_mxt_ts.c:(.text.mxt_vidioc_querycap+0x10): undefined reference to `video_devdata' drivers/input/touchscreen/atmel_mxt_ts.o: In function `mxt_buffer_queue': atmel_mxt_ts.c:(.text.mxt_buffer_queue+0x20): undefined reference to `vb2_plane_vaddr' atmel_mxt_ts.c:(.text.mxt_buffer_queue+0x164): undefined reference to `vb2_buffer_done' drivers/input/touchscreen/atmel_mxt_ts.o: In function `mxt_free_object_table': atmel_mxt_ts.c:(.text.mxt_free_object_table+0x18): undefined reference to `video_unregister_device' atmel_mxt_ts.c:(.text.mxt_free_object_table+0x20): undefined reference to `v4l2_device_unregister' The best workaround I could come up with is to disallow the debug mode unless it's actually possible to call it. Fixes: ecfdd7e2660e ("[media] Input: atmel_mxt_ts - output diagnostic debug via V4L2 device") Signed-off-by: Arnd Bergmann <a...@arndb.de> Acked-by: Nick Dyer <n...@shmanahar.org> Signed-off-by: Hans Verkuil <hans.verk...@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mche...@s-opensource.com> drivers/input/touchscreen/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 754e6aa0851d..ec41df887278 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -117,7 +117,8 @@ config TOUCHSCREEN_ATMEL_MXT config TOUCHSCREEN_ATMEL_MXT_T37 bool "Support T37 Diagnostic Data" - depends on TOUCHSCREEN_ATMEL_MXT && VIDEO_V4L2 + depends on TOUCHSCREEN_ATMEL_MXT + depends on VIDEO_V4L2=y || (TOUCHSCREEN_ATMEL_MXT=m && VIDEO_V4L2=m) select VIDEOBUF2_VMALLOC help Say Y here if you want support to output data from the T37 _______________________________________________ linuxtv-commits mailing list linuxtv-commits@linuxtv.org https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits