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Enrico Weigelt, metux IT consult 2077ec340c drivers: gpu: drm: virtio: fix dependency of DRM_VIRTIO_GPU on VIRTIO
VIRTIO itself has no dependencies and therefore can easily be just
select'ed, instead of depending on it. The current depends on causes
any others trying to select VIRTIO to fail like this:

   drivers/gpu/drm/Kconfig:74:error: recursive dependency detected!
   drivers/gpu/drm/Kconfig:74:	symbol DRM_KMS_HELPER is selected by DRM_VIRTIO_GPU
   drivers/gpu/drm/virtio/Kconfig:2:	symbol DRM_VIRTIO_GPU depends on VIRTIO
   drivers/virtio/Kconfig:2:	symbol VIRTIO is selected by GPIO_VIRTIO
   drivers/gpio/Kconfig:1618:	symbol GPIO_VIRTIO depends on GPIOLIB
   drivers/gpio/Kconfig:14:	symbol GPIOLIB is selected by I2C_MUX_LTC4306
   drivers/i2c/muxes/Kconfig:47:	symbol I2C_MUX_LTC4306 depends on I2C
   drivers/i2c/Kconfig:8:	symbol I2C is selected by FB_DDC
   drivers/video/fbdev/Kconfig:63:	symbol FB_DDC depends on FB
   drivers/video/fbdev/Kconfig:12:	symbol FB is selected by DRM_KMS_FB_HELPER
   drivers/gpu/drm/Kconfig:80:	symbol DRM_KMS_FB_HELPER depends on DRM_KMS_HELPER

It seems that having both 'depends on' as well as 'select' on the same symbol
sends us into big trouble, and Kconfig can't break up the circular dependency
(note that in the tested configuration, neither I2C, FB or DRM are enabled at
all). Perhaps we could consider this a bug in Kconfig, but the trouble can
easily be circumvented by changing 'depends on' into 'select'.

DRM_VIRTIO_GPU also depends on VIRTIO_MENU, so even after this change, that
option will only show up if the user already enabled virtio in the config.

This change didn't cause any changes in the .config after menuconfig run,
so we should be completely safe here.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Reviewed-by: Anthoine Bourgeois <anthoine.bourgeois@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20201204131221.2827-1-info@metux.net
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-12-22 13:43:29 +01:00
arch ARM: dts: omap5: add address-cells & size-cells to dsi 2020-12-15 16:17:30 +02:00
block block-5.10-2020-12-05 2020-12-05 14:45:30 -08:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto drivers-5.10-2020-10-12 2020-10-13 13:04:41 -07:00
Documentation drm/doc: introduce new section for standard plane properties 2020-12-17 16:56:40 +01:00
drivers drivers: gpu: drm: virtio: fix dependency of DRM_VIRTIO_GPU on VIRTIO 2020-12-22 13:43:29 +01:00
fs io_uring-5.10-2020-12-11 2020-12-12 09:45:01 -08:00
include drm/doc: atomic implicitly enables other caps 2020-12-17 17:06:26 +01:00
init initramfs: fix clang build failure 2020-12-11 14:02:14 -08:00
ipc ipc: adjust proc_ipc_sem_dointvec definition to match prototype 2020-09-05 12:14:29 -07:00
kernel A set of x86 and membarrier fixes: 2020-12-13 11:31:19 -08:00
lib drm for 5.11-rc1 2020-12-14 11:07:56 -08:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm drm-misc-next for 5.11: 2020-12-15 10:21:48 +01:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2020-12-10 14:29:30 -08:00
samples Tracing fixes for 5.10-rc6 2020-12-01 15:30:18 -08:00
scripts Kbuild fixes for v5.10 (2nd) 2020-12-06 10:31:39 -08:00
security selinux/stable-5.10 PR 20201113 2020-11-14 12:04:02 -08:00
sound ALSA: hda/realtek: Add mute LED quirk to yet another HP x360 model 2020-11-28 10:00:51 +01:00
tools drm for 5.11-rc1 2020-12-14 11:07:56 -08:00
usr Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 13:29:39 -07:00
virt kvm: x86/mmu: Support dirty logging for the TDP MMU 2020-10-23 03:42:13 -04:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: docs: ignore sphinx_*/ directories 2020-09-10 10:44:31 -06:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: Update addresses for TI display drivers 2020-12-17 11:05:03 +02:00
Makefile Linux 5.10 2020-12-13 14:41:30 -08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.