You are not logged in.
Pages: 1
I have a custom kernel config and just grabbed the release that came down today from kernel.org. When I ran make oldconfig, it removed a bunch of DRM settings. Diff below:
#
# Automatically generated file; DO NOT EDIT.
-# Linux/x86 5.15.2 Kernel Configuration
+# Linux/x86 5.15.3 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="gcc (GCC) 11.1.0"
CONFIG_CC_IS_GCC=y
@@ -2330,24 +2330,10 @@
CONFIG_DRM_DP_AUX_CHARDEV=y
# CONFIG_DRM_DEBUG_MM is not set
# CONFIG_DRM_DEBUG_SELFTEST is not set
-CONFIG_DRM_KMS_HELPER=y
-# CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS is not set
-CONFIG_DRM_FBDEV_EMULATION=y
-CONFIG_DRM_FBDEV_OVERALLOC=100
-# CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM is not set
CONFIG_DRM_LOAD_EDID_FIRMWARE=y
# CONFIG_DRM_DP_CEC is not set
#
-# I2C encoder or helper chips
-#
-# CONFIG_DRM_I2C_CH7006 is not set
-# CONFIG_DRM_I2C_SIL164 is not set
-# CONFIG_DRM_I2C_NXP_TDA998X is not set
-# CONFIG_DRM_I2C_NXP_TDA9950 is not set
-# end of I2C encoder or helper chips
-
-#
# ARM devices
#
# end of ARM devices
@@ -2364,15 +2350,7 @@
# CONFIG_DRM_AST is not set
# CONFIG_DRM_MGAG200 is not set
# CONFIG_DRM_QXL is not set
-CONFIG_DRM_PANEL=y
-
-#
-# Display Panels
-#
-# end of Display Panels
-
CONFIG_DRM_BRIDGE=y
-CONFIG_DRM_PANEL_BRIDGE=y
#
# Display Interface Bridges
@@ -2400,12 +2378,7 @@
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
-CONFIG_FB_SYS_FILLRECT=y
-CONFIG_FB_SYS_COPYAREA=y
-CONFIG_FB_SYS_IMAGEBLIT=y
# CONFIG_FB_FOREIGN_ENDIAN is not set
-CONFIG_FB_SYS_FOPS=y
-CONFIG_FB_DEFERRED_IO=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y
@@ -3578,6 +3551,7 @@
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_RNG_DEFAULT=y
CONFIG_CRYPTO_AKCIPHER2=y
CONFIG_CRYPTO_AKCIPHER=y
CONFIG_CRYPTO_KPP2=yI'm guessing this commit is the cause:
commit 94e18f5a5dd1b5e3b89c665fc5ff780858b1c9f6
Author: Arnd Bergmann <arnd@arndb.de>
Date: Fri Oct 29 14:02:38 2021 +0200
drm: fb_helper: improve CONFIG_FB dependency
[ Upstream commit 9d6366e743f37d36ef69347924ead7bcc596076e ]
My previous patch correctly addressed the possible link failure, but as
Jani points out, the dependency is now stricter than it needs to be.
Change it again, to allow DRM_FBDEV_EMULATION to be used when
DRM_KMS_HELPER and FB are both loadable modules and DRM is linked into
the kernel.
As a side-effect, the option is now only visible when at least one DRM
driver makes use of DRM_KMS_HELPER. This is better, because the option
has no effect otherwise.
Fixes: 606b102876e3 ("drm: fb_helper: fix CONFIG_FB dependency")
Suggested-by: Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211029120307.1407047-1-arnd@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>I don't have Nouveau or any other DRM drivers that I know of compiled in because I don't need them. Do I just have to pick some random DRM driver now to get the things Nvidia needs?
I've reverted back to 5.15.2 and everything is working fine. Maybe this becomes a problem in Arch kernel once it gets upgraded so something to watch out for.
Offline
Enable DRM_VKMS which I believe pulls in the least dependencies apart from DRM_KMS_HELPER or use something similar to the patch below:
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 0039df26854b..f952ed657883 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -82,6 +82,7 @@ config DRM_DEBUG_SELFTEST
config DRM_KMS_HELPER
tristate
depends on DRM
+ default y
help
CRTC helpers for KMS drivers.
Offline
Enable DRM_VKMS which I believe pulls in the least dependencies apart from DRM_KMS_HELPER or use something similar to the patch below:
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 0039df26854b..f952ed657883 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -82,6 +82,7 @@ config DRM_DEBUG_SELFTEST config DRM_KMS_HELPER tristate depends on DRM + default y help CRTC helpers for KMS drivers.
Hmm... DRM_VKMS was marked as experimental. I just compiled in Nouveau as a module and it seems to have fixed the problem. Still kind of annoying as Nouveau takes a while to compile. Maybe I'll try that patch later. I'm not sure why they decided to make that change that breaks people's configs, especially in a stable release.
Offline
Queued for revert in 5.15.3 https://git.kernel.org/pub/scm/linux/ke … 4439ecf41a
Offline
Pages: 1