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linux/drivers/gpu/drm
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Linus Torvalds d11219ad53 amdgpu: disable powerpc support for the newer display engine 
The DRM_AMD_DC_DCN display engine support (Raven, Navi, and newer) has
not been building cleanly on powerpc and causes link errors due to
mixing hard- and soft-float object files:

  powerpc64-linux-ld: drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o uses hard float, drivers/gpu/drm/amd/amdgpu/../display/dc/dcn31/dcn31_resource.o uses soft float
  powerpc64-linux-ld: failed to merge target specific data of file drivers/gpu/drm/amd/amdgpu/../display/dc/dcn31/dcn31_resource.o
  [..]

and while patches are floating around, it's not exactly obvious what is
going on.

The problem bisects to commit 41b7a347bf ("powerpc: Book3S 64-bit
outline-only KASAN support") but that is probably more about changing
config variables than the fundamental cause.

Despite the bisection result, a more directly related commit seems to be
26f4712aed ("drm/amd/display: move FPU related code from dcn31 to
dml/dcn31 folder").  It's probably a combination of the two.

This has been going on since the merge window, without any final word.
So instead of blindly applying patches that may or may not be the right
thing, let's disable this for now.

As Michael Ellerman says:
 "IIUIC this code was never enabled on ppc before, so disabling it seems
  like a reasonable fix to get the build clean"

and once we have more actual feedback (and find any potential users) we
can always re-enable it with the patch that fixes the issues and
back-port as necessary.

Fixes: 41b7a347bf ("powerpc: Book3S 64-bit outline-only KASAN support")
Fixes: 26f4712aed ("drm/amd/display: move FPU related code from dcn31 to dml/dcn31 folder")
Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/all/20220606153910.GA1773067@roeck-us.net/
Link: https://lore.kernel.org/all/20220618232737.2036722-1-linux@roeck-us.net/
Link: https://lore.kernel.org/all/20220713050724.GA2471738@roeck-us.net/
Acked-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2022-07-14 10:05:46 -07:00
..
amd amdgpu: disable powerpc support for the newer display engine 2022-07-14 10:05:46 -07:00
arm Merge tag 'drm-msm-next-2022-05-09' of https://gitlab.freedesktop.org/drm/msm into drm-next 2022-05-11 12:40:47 +10:00
armada Driver core changes for 5.18-rc1 2022-03-28 12:41:28 -07:00
aspeed drm/aspeed: Add AST2600 chip support 2022-03-03 09:08:35 +10:30
ast drm/ast: Support multiple outputs 2022-06-09 10:27:49 +02:00
atmel-hlcdc drm/atmel-hlcdc: Use drm_module_platform_driver() to register the driver 2022-01-27 19:15:46 +01:00
bridge drm/bridge: fsl-ldb: Drop DE signal polarity inversion 2022-07-04 16:17:07 +02:00
display drm for 5.19-rc1 2022-05-25 16:18:27 -07:00
etnaviv Merge branch 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux into drm-next 2022-05-17 12:20:04 +10:00
exynos drm/exynos: mic: Rework initialization 2022-06-14 22:32:16 +09:00
fsl-dcu drm/fsl-dcu: Use drm_module_platform_driver() to register the driver 2022-01-27 19:15:46 +01:00
gma500 drm: Rename dp/ to display/ 2022-04-25 11:17:45 +02:00
gud dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
hisilicon Driver core changes for 5.18-rc1 2022-03-28 12:41:28 -07:00
hyperv drm/hyperv: Remove support for Hyper-V 2008 and 2008R2/Win7 2022-05-11 17:49:49 +00:00
i2c
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i810
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i915 drm/i915: Fix vm use-after-free in vma destruction 2022-07-06 23:04:55 -04:00
imx drm: imx: fix compiler warning with gcc-12 2022-06-09 09:39:44 -07:00
ingenic drm/ingenic: Add dw-hdmi driver specialization for jz4780 2022-04-11 16:04:39 +01:00
kmb drm-misc-next for v5.18: 2022-02-25 05:50:18 +10:00
lib drm/selftests: add drm buddy alloc range testcase 2022-02-23 10:44:43 +01:00
lima dma-buf: specify usage while adding fences to dma_resv obj v7 2022-04-07 12:53:53 +02:00
mcde Revert "drm: bridge: mcde_dsi: Switch to devm_drm_of_get_bridge" 2022-05-04 17:06:31 +02:00
mediatek Mediatek DRM Next for Linux 5.19 2022-05-06 17:26:01 +10:00
meson Merge drm/drm-next into drm-misc-next 2022-04-05 11:06:58 +02:00
mga
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mgag200 drm/mgag200: Protect concurrent access to I/O registers with lock 2022-05-05 09:18:54 +02:00
msm Merge tag 'drm-msm-fixes-2022-06-28' of https://gitlab.freedesktop.org/drm/msm into drm-fixes 2022-06-29 14:16:46 +10:00
mxsfb drm: mxsfb: Implement LCDIF scanout CRC32 support 2022-05-05 01:03:49 +02:00
nouveau drm for 5.19-rc1 2022-05-25 16:18:27 -07:00
omapdrm Merge drm/drm-next into drm-misc-next 2022-04-05 11:06:58 +02:00
panel Merge drm/drm-next into drm-misc-next 2022-05-03 11:53:42 +02:00
panfrost drm/panfrost: Fix shrinker list corruption by madvise IOCTL 2022-07-04 16:38:00 +01:00
pl111
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qxl drm/qxl: add drm_gem_plane_helper_prepare_fb 2022-05-05 12:30:10 +02:00
r128
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radeon drm/radeon: fix a possible null pointer dereference 2022-05-26 14:56:31 -04:00
rcar-du drm: allow passing possible_crtcs to drm_writeback_connector_init() 2022-05-02 02:12:59 +03:00
rockchip drm/rockchip: Detach from ARM DMA domain in attach_device 2022-07-04 17:17:35 +02:00
savage
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scheduler drm/sched: use __string in tracepoints 2022-04-26 15:11:00 -04:00
selftests drm: Rename dp/ to display/ 2022-04-25 11:17:45 +02:00
shmobile drm/shmobile: Use drm_module_platform_driver() to register the driver 2022-01-27 19:15:47 +01:00
sis
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solomon drm/ssd130x: Fix pre-charge period setting 2022-07-07 10:52:03 +02:00
sprd Driver core changes for 5.18-rc1 2022-03-28 12:41:28 -07:00
sti drm/sti: fix typos in comments 2022-04-07 11:31:52 +02:00
stm stm: ltdc: fix two incorrect NULL checks on list iterator 2022-04-07 10:26:59 +02:00
sun4i drm/sun4i: Return if frontend is not present 2022-06-22 16:42:25 +02:00
tdfx
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tegra drm/tegra: Changes for v5.19-rc1 2022-05-13 13:14:34 +10:00
tidss drm/tidss: Soft Reset DISPC on startup 2022-04-19 15:09:45 +03:00
tilcdc drm/tilcdc: fix typos in comment 2022-04-25 10:18:52 +03:00
tiny drm/simpledrm: Use fbdev defaults for shadow buffering 2022-05-03 16:04:22 +02:00
ttm drm/ttm: fix bulk move handling v2 2022-06-14 11:15:19 +02:00
tve200 drm/tve200: Use drm_module_platform_driver() to register the driver 2022-01-27 19:15:48 +01:00
udl dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
v3d drm/v3d: Fix null pointer dereference of pointer perfmon 2022-04-26 11:55:28 -01:00
vboxvideo drm-misc-next for v5.18: 2022-02-25 05:50:18 +10:00
vc4 drm/vc4: perfmon: Fix variable dereferenced before check 2022-06-27 15:43:14 +02:00
vgem dma-buf: specify usage while adding fences to dma_resv obj v7 2022-04-07 12:53:53 +02:00
via
…
virtio dma-buf: specify usage while adding fences to dma_resv obj v7 2022-04-07 12:53:53 +02:00
vkms drm: allow passing possible_crtcs to drm_writeback_connector_init() 2022-05-02 02:12:59 +03:00
vmwgfx drm/vmwgfx: Disable command buffers on svga3 without gbobjects 2022-05-13 10:29:36 -04:00
xen drm/xen: Add missing VM_DONTEXPAND flag in mmap callback 2022-06-21 16:36:13 +02:00
xlnx drm/display: Introduce a DRM display-helper module 2022-04-25 11:19:21 +02:00
Kconfig drm/display: Move HDMI helpers into display-helper module 2022-04-25 11:19:36 +02:00
Makefile drm/display: Move SCDC helpers into display-helper library 2022-04-25 11:19:37 +02:00
drm_agpsupport.c
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drm_aperture.c drm/aperture: Run fbdev removal before internal helpers 2022-07-09 11:12:05 -07:00
drm_atomic.c drm/atomic: Add atomic_print_state to private objects 2022-03-31 10:19:45 +02:00
drm_atomic_helper.c drm/atomic: Force bridge self-refresh-exit on CRTC switch 2022-06-06 13:27:17 -07:00
drm_atomic_state_helper.c drm/object: Add default color encoding and range value at reset 2022-02-25 17:57:14 +01:00
drm_atomic_uapi.c drm: handle kernel fences in drm_gem_plane_helper_prepare_fb v2 2022-05-02 09:01:51 +02:00
drm_auth.c
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drm_blend.c drm/blend: fix typo in the comment 2022-03-16 09:36:13 +01:00
drm_bridge.c
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drm_bridge_connector.c drm/bridge_connector: enable HPD by default if supported 2022-03-04 19:34:24 +00:00
drm_buddy.c drm: add a check to verify the size alignment 2022-04-11 15:35:47 +02:00
drm_bufs.c
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drm_cache.c drm for 5.18-rc1 2022-03-24 16:19:43 -07:00
drm_client.c dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
drm_client_modeset.c drm: Convert open-coded yes/no strings to yesno() 2022-02-07 13:04:25 -08:00
drm_color_mgmt.c drm: fix typo in comment 2022-05-04 14:09:34 +02:00
drm_connector.c drm/display: Move HDMI helpers into display-helper module 2022-04-25 11:19:36 +02:00
drm_context.c
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drm_crtc.c
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drm_crtc_helper.c drm: Use drm_mode_copy() 2022-04-12 09:27:20 +03:00
drm_crtc_helper_internal.h drm/dp: Move DP declarations into separate header file 2022-01-17 11:25:44 +01:00
drm_crtc_internal.h
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drm_damage_helper.c
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drm_debugfs.c drm: Plumb debugfs_init through to panels 2022-02-15 15:25:18 -08:00
drm_debugfs_crc.c
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drm_displayid.c
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drm_dma.c
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drm_drv.c
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drm_dumb_buffers.c
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drm_edid.c drm/edid: drop kernel-doc for static functions 2022-04-29 14:04:55 +03:00
drm_edid_load.c
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drm_encoder.c
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drm_encoder_slave.c
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drm_fb_cma_helper.c
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drm_fb_helper.c fbdev: Rename pagelist to pagereflist for deferred I/O 2022-05-03 16:04:22 +02:00
drm_file.c
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drm_flip_work.c
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drm_format_helper.c drm/format-helper: Share implementation among conversion helpers 2022-05-05 08:54:09 +02:00
drm_fourcc.c drm/fourcc: Add packed 10bit YUV 4:2:0 format 2021-12-16 11:23:22 +01:00
drm_framebuffer.c drm: introduce fb_modifiers_not_supported flag in mode_config 2022-01-31 21:45:23 +01:00
drm_gem.c dma-buf: add enum dma_resv_usage v4 2022-04-07 12:53:53 +02:00
drm_gem_atomic_helper.c drm: handle kernel fences in drm_gem_plane_helper_prepare_fb v2 2022-05-02 09:01:51 +02:00
drm_gem_cma_helper.c Linux 5.17-rc6 2022-02-28 14:57:14 +10:00
drm_gem_framebuffer_helper.c dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
drm_gem_shmem_helper.c drm-misc-next for v5.18: 2022-02-25 05:50:18 +10:00
drm_gem_ttm_helper.c dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
drm_gem_vram_helper.c Merge drm/drm-next into drm-misc-next 2022-04-05 11:06:58 +02:00
drm_hashtab.c
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drm_internal.h dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
drm_ioc32.c
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drm_ioctl.c drm: introduce fb_modifiers_not_supported flag in mode_config 2022-01-31 21:45:23 +01:00
drm_irq.c
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drm_kms_helper_common.c drm/dp: Move DisplayPort helpers into separate helper module 2022-01-17 11:25:44 +01:00
drm_lease.c
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drm_legacy.h
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drm_legacy_misc.c
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drm_lock.c
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drm_managed.c drm: Add DRM-managed mutex_init() 2022-05-05 09:04:10 +02:00
drm_memory.c
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drm_mipi_dbi.c dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
drm_mipi_dsi.c drm/display: Move DSC header and helpers into display-helper module 2022-04-25 11:19:36 +02:00
drm_mm.c lib/stackdepot: allow optional init and stack_table allocation by kvmalloc() 2022-01-22 08:33:37 +02:00
drm_mode_config.c
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drm_mode_object.c drm/object: Add drm_object_property_get_default_value() function 2022-02-25 17:55:42 +01:00
drm_modes.c drm/modes: Make width-mm/height-mm check in of_get_drm_panel_display_mode() mandatory 2022-04-24 23:54:05 +02:00
drm_modeset_helper.c
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drm_modeset_lock.c lib/stackdepot: allow optional init and stack_table allocation by kvmalloc() 2022-01-22 08:33:37 +02:00
drm_nomodeset.c
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drm_of.c Revert "drm: of: Lookup if child node has panel or bridge" 2022-04-21 09:18:08 +02:00
drm_panel.c
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drm_panel_orientation_quirks.c drm: panel-orientation-quirks: Add quirk for the Lenovo Yoga Tablet 2 830 2022-07-01 10:50:49 +02:00
drm_pci.c
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drm_plane.c drm/plane: Move range check for format_count earlier 2022-04-28 16:13:04 +01:00
drm_plane_helper.c
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drm_prime.c dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
drm_print.c
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drm_privacy_screen.c drm-misc-next for v5.18: 2022-02-25 05:50:18 +10:00
drm_privacy_screen_x86.c drm-misc-next for v5.18: 2022-02-01 19:02:41 +10:00
drm_probe_helper.c
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drm_property.c
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drm_rect.c
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drm_scatter.c
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drm_self_refresh_helper.c
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drm_simple_kms_helper.c
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drm_syncobj.c drm/syncobj: flatten dma_fence_chains on transfer 2022-02-11 11:30:01 +01:00
drm_sysfs.c
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drm_trace.h
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drm_trace_points.c
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drm_vblank.c drm: Use drm_mode_copy() 2022-04-12 09:27:20 +03:00
drm_vblank_work.c
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drm_vm.c LoongArch: Add writecombine support for drm 2022-06-03 20:09:27 +08:00
drm_vma_manager.c
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drm_writeback.c drm: introduce drm_writeback_connector_init_with_encoder() API 2022-05-02 02:12:59 +03:00