4bdbff4da4
There are three tuners that depend on some functions inside
V4L2 core:
$ git grep -l -E 'v4l2_[0-9a-zA-Z_]+\(' drivers/media/tuners/
drivers/media/tuners/e4000.c
drivers/media/tuners/fc2580.c
drivers/media/tuners/msi001.c
Make them dependent of VIDEO_V4L2, as otherwise, this would happen:
on x86_64:
CONFIG_VIDEO_V4L2=m
CONFIG_MEDIA_TUNER_E4000=y
ld: drivers/media/tuners/e4000.o: in function `e4000_remove':
e4000.c:(.text+0x34): undefined reference to `v4l2_ctrl_handler_free'
ld: drivers/media/tuners/e4000.o: in function `e4000_probe':
e4000.c:(.text+0x16c1): undefined reference to `v4l2_ctrl_handler_init_class'
ld: e4000.c:(.text+0x16eb): undefined reference to `v4l2_ctrl_new_std'
ld: e4000.c:(.text+0x1731): undefined reference to `v4l2_ctrl_new_std'
ld: e4000.c:(.text+0x1762): undefined reference to `v4l2_ctrl_auto_cluster'
ld: e4000.c:(.text+0x178c): undefined reference to `v4l2_ctrl_new_std'
ld: e4000.c:(.text+0x17d6): undefined reference to `v4l2_ctrl_new_std'
ld: e4000.c:(.text+0x1804): undefined reference to `v4l2_ctrl_auto_cluster'
ld: e4000.c:(.text+0x182e): undefined reference to `v4l2_ctrl_new_std'
ld: e4000.c:(.text+0x1878): undefined reference to `v4l2_ctrl_new_std'
ld: e4000.c:(.text+0x18a6): undefined reference to `v4l2_ctrl_auto_cluster'
ld: e4000.c:(.text+0x18d0): undefined reference to `v4l2_ctrl_new_std'
ld: e4000.c:(.text+0x191a): undefined reference to `v4l2_ctrl_new_std'
ld: e4000.c:(.text+0x1948): undefined reference to `v4l2_ctrl_auto_cluster'
ld: e4000.c:(.text+0x1972): undefined reference to `v4l2_ctrl_new_std'
ld: e4000.c:(.text+0x19a6): undefined reference to `v4l2_ctrl_handler_free'
ld: e4000.c:(.text+0x1a2a): undefined reference to `v4l2_i2c_subdev_init'
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.