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| author | Arnd Bergmann <arnd@arndb.de> | 2016-09-12 12:30:33 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-09-19 16:24:43 -0300 |
| commit | 47d8e00ca3f9269498b4333d5c787f1442ebdbb6 (patch) | |
| tree | 962db26e37d045e04205a4c2759f04e56298070e /drivers/input | |
| parent | 7a4b9a29f8e5e16c28dbc56a8d2da7b6b3e482c7 (diff) | |
| download | linux-47d8e00ca3f9269498b4333d5c787f1442ebdbb6.tar.bz2 | |
[media] Input: synaptics-rmi4: disallow impossible configuration
The newly added debug mode for the synaptics-rmi4 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/rmi4/rmi_core.o: In function `rmi_f54_remove':
rmi_f54.c:(.text.rmi_f54_remove+0x14): undefined reference to `video_unregister_device'
rmi_f54.c:(.text.rmi_f54_remove+0x20): undefined reference to `v4l2_device_unregister'
drivers/input/rmi4/rmi_core.o: In function `rmi_f54_vidioc_s_input':
rmi_f54.c:(.text.rmi_f54_vidioc_s_input+0x10): undefined reference to `video_devdata'
drivers/input/rmi4/rmi_core.o: In function `rmi_f54_vidioc_g_input':
rmi_f54.c:(.text.rmi_f54_vidioc_g_input+0x10): undefined reference to `video_devdata'
drivers/input/rmi4/rmi_core.o: In function `rmi_f54_vidioc_fmt':
rmi_f54.c:(.text.rmi_f54_vidioc_fmt+0x10): undefined reference to `video_devdata'
drivers/input/rmi4/rmi_core.o: In function `rmi_f54_vidioc_enum_input':
rmi_f54.c:(.text.rmi_f54_vidioc_enum_input+0x10): undefined reference to `video_devdata'
drivers/input/rmi4/rmi_core.o: In function `rmi_f54_vidioc_querycap':
...
The best workaround I could come up with is to disallow the debug
mode unless it's actually possible to call it.
Fixes: 3a762dbd5347 ("[media] Input: synaptics-rmi4 - add support for F54 diagnostics")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Nick Dyer <nick@shmanahar.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/rmi4/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/input/rmi4/Kconfig b/drivers/input/rmi4/Kconfig index f3418b65eb41..4c8a55857e00 100644 --- a/drivers/input/rmi4/Kconfig +++ b/drivers/input/rmi4/Kconfig @@ -65,7 +65,7 @@ config RMI4_F30 config RMI4_F54 bool "RMI4 Function 54 (Analog diagnostics)" depends on RMI4_CORE - depends on VIDEO_V4L2 + depends on VIDEO_V4L2=y || (RMI4_CORE=m && VIDEO_V4L2=m) select VIDEOBUF2_VMALLOC help Say Y here if you want to add support for RMI4 function 54 |