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c7581a414d
linux_dsm_epyc7002/drivers/gpu/drm
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Daniel Vetter c7581a414d drm: Use EOPNOTSUPP, not ENOTSUPP 
- it's what we recommend in our docs:

https://dri.freedesktop.org/docs/drm/gpu/drm-uapi.html#recommended-ioctl-return-values

- it's the overwhelmingly used error code for "operation not
  supported", at least in drm core (slightly less so in drivers):

$ git grep EOPNOTSUPP -- drivers/gpu/drm/*c | wc -l
83
$ git grep ENOTSUPP -- drivers/gpu/drm/*c | wc -l
5

- include/linux/errno.h makes it fairly clear that these are for nfsv3
  (plus they also have error codes above 512, which is the block with
  some special behaviour ...)

/* Defined for the NFSv3 protocol */

If the above isn't reflecting current practice, then I guess we should
at least update the docs.

Noralf commented:

Ben Hutchings made this comment[1] in a thread about use of ENOTSUPP in
drivers:

  glibc's strerror() returns these strings for ENOTSUPP and EOPNOTSUPP
  respectively:

  "Unknown error 524"
  "Operation not supported"

So at least for errors returned to userspace EOPNOTSUPP makes sense.

José asked:

> Hopefully this will not break any userspace

None of the functions in drm_edid.c affected by this reach userspace,
it's all driver internal.

Same for the mipi function, that error code should be handled by
drivers. Drivers are supposed to remap "the hw is on fire" to EIO when
reporting up to userspace, but I think if a driver sees this it would
be a driver bug.
v2: Augment commit message with comments from Noralf and José

Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Sean Paul <sean@poorly.run>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Andres Rodriguez <andresx7@gmail.com>
Cc: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190904143942.31756-1-daniel.vetter@ffwll.ch
2019-09-06 11:56:48 +02:00
..
amd drm_dp_cec: add connector info support. 2019-08-27 12:52:59 +02:00
arc drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
arm drm/komeda: Add ACLK rate to sysfs 2019-09-03 14:12:59 +01:00
armada drm/armada: drop use of drmP.h 2019-08-14 18:31:10 +02:00
aspeed drm/aspeed: gfc_crtc: Make structure aspeed_gfx_funcs constant 2019-08-14 19:27:26 +02:00
ast drm/vram: use embedded gem object 2019-08-06 08:21:53 +02:00
atmel-hlcdc Linus 5.3-rc1 2019-07-22 21:24:10 +02:00
bochs drm: drop resource_id parameter from drm_fb_helper_remove_conflicting_pci_framebuffers 2019-08-23 10:48:31 +02:00
bridge drm: dw-hdmi-i2s: enable audio clock in audio_startup 2019-09-02 11:42:29 +02:00
cirrus drm: drop resource_id parameter from drm_fb_helper_remove_conflicting_pci_framebuffers 2019-08-23 10:48:31 +02:00
etnaviv dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
exynos drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
fsl-dcu drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
gma500
hisilicon drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
i2c drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
i810 drm/i810: drop use of drmP.h 2019-07-17 12:52:55 +02:00
i915 drm/i915/intel_hdmi: use cec_notifier_conn_(un)register 2019-08-27 12:53:01 +02:00
imx drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
ingenic drm/ingenic: Hardcode panel type to DPI 2019-08-29 11:58:19 +02:00
lib
lima dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
mcde drm/mcde: Fix an error handling path in 'mcde_probe()' 2019-08-26 22:07:09 +02:00
mediatek drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
meson drm/meson: add resume/suspend hooks 2019-08-28 11:17:59 +02:00
mga drm/mga: drop use of drmP.h 2019-06-30 09:48:05 +02:00
mgag200 drm: drop resource_id parameter from drm_fb_helper_remove_conflicting_pci_framebuffers 2019-08-23 10:48:31 +02:00
msm drm/msm: Use drm_attach_bridge() to attach a bridge to an encoder 2019-08-28 22:22:49 +02:00
mxsfb dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
nouveau drm_dp_cec: add connector info support. 2019-08-27 12:52:59 +02:00
omapdrm drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
panel drm/panel: Initialise panel dev and funcs through drm_panel_init() 2019-08-24 10:42:48 +02:00
panfrost drm/panfrost: Add errata descriptions from kbase 2019-08-23 12:16:27 -05:00
pl111 drm/pl111: Support grayscale 2019-08-09 09:15:05 +02:00
qxl drm: drop resource_id parameter from drm_fb_helper_remove_conflicting_pci_framebuffers 2019-08-23 10:48:31 +02:00
r128 drm/r128: drop use of drmP.h 2019-07-17 12:52:55 +02:00
radeon drm: drop resource_id parameter from drm_fb_helper_remove_conflicting_pci_framebuffers 2019-08-23 10:48:31 +02:00
rcar-du drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
rockchip drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
savage
scheduler drm/scheduler: drop use of drmP.h 2019-07-15 18:11:31 +02:00
selftests drm/dp_mst: Add sideband down request tracing + selftests 2019-09-03 19:30:06 -04:00
shmobile drm/shmobile: drop use of drmP.h 2019-07-15 18:11:31 +02:00
sis
sti drm/sti: Include the right header 2019-09-02 15:10:02 +02:00
stm drm/stm: attach gem fence to atomic state 2019-07-25 12:00:09 +02:00
sun4i drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
tdfx drm/tdfx: drop use of drmP.h 2019-07-17 12:52:55 +02:00
tegra drm/tegra: drop use of drmP.h 2019-08-14 18:31:04 +02:00
tilcdc drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
tiny drm: gm12u320: Add -ENODEV to list of errors to ignore 2019-08-12 21:30:21 +02:00
ttm dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
tve200 drm/tve200: drop use of drmP.h 2019-07-15 18:11:30 +02:00
udl drm/udl: drop use of drmP.h 2019-07-17 12:52:55 +02:00
v3d dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
vboxvideo drm/vboxvideo: Make structure vbox_fb_helper_funcs constant 2019-08-18 12:52:52 +02:00
vc4 drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
vgem dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
via drm/via: drop use of drmP.h 2019-07-25 17:35:20 +02:00
virtio drm/virtio: fix command submission with objects but without fence. 2019-09-06 07:23:37 +02:00
vkms drm/vkms: Reduce critical section in vblank_simulate 2019-09-03 17:16:53 +02:00
vmwgfx dma-fence: Store the timestamp in the same union as the cb_list 2019-08-17 18:46:33 +01:00
xen drm/xen-front: Make structure fb_funcs constant 2019-08-19 08:32:52 +03:00
zte Linus 5.3-rc1 2019-07-22 21:24:10 +02:00
ati_pcigart.c drm/ati_pcigart: drop dependency on drm_os_linux.h 2019-07-19 23:24:16 +02:00
drm_agpsupport.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_atomic_helper.c drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
drm_atomic_state_helper.c
drm_atomic_uapi.c dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
drm_atomic.c
drm_auth.c
drm_blend.c
drm_bridge.c
drm_bufs.c drm main pull request for v5.3-rc1 (sans mm changes) 2019-07-15 19:04:27 -07:00
drm_cache.c
drm_client_modeset.c drm/modes: Skip invalid cmdline mode 2019-07-10 12:11:18 +02:00
drm_client.c drm/client: remove the exporting of drm_client_close 2019-07-09 11:34:39 +02:00
drm_color_mgmt.c
drm_connector.c drm: Fix kerneldoc warns in connector-related docs 2019-08-12 10:16:39 -04:00
drm_context.c
drm_crtc_helper_internal.h
drm_crtc_helper.c drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
drm_crtc_internal.h
drm_crtc.c
drm_damage_helper.c
drm_debugfs_crc.c drm/crc-debugfs: Add notes about CRC<->commit interactions 2019-08-06 18:27:53 +01:00
drm_debugfs.c
drm_dma.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_dp_aux_dev.c drm/dp_mst: Enable registration of AUX devices for MST ports 2019-07-25 16:39:35 -04:00
drm_dp_cec.c drm_dp_cec: add connector info support. 2019-08-27 12:52:59 +02:00
drm_dp_dual_mode_helper.c
drm_dp_helper.c drm: Make the bw/link rate calculations more forgiving 2019-07-17 12:45:30 -04:00
drm_dp_mst_topology_internal.h drm/dp_mst: Add sideband down request tracing + selftests 2019-09-03 19:30:06 -04:00
drm_dp_mst_topology.c drm/dp_mst: Cleanup drm_dp_send_link_address() a bit 2019-09-03 19:37:00 -04:00
drm_drv.c drm/drv: Use // for comments in example code 2019-08-19 19:21:49 +02:00
drm_dsc.c
drm_dumb_buffers.c Revert "drm/gem: Rename drm_gem_dumb_map_offset() to drm_gem_map_offset()" 2019-08-07 11:56:48 -04:00
drm_edid_load.c
drm_edid.c drm: Use EOPNOTSUPP, not ENOTSUPP 2019-09-06 11:56:48 +02:00
drm_encoder_slave.c
drm_encoder.c drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
drm_fb_cma_helper.c
drm_fb_helper.c drm/fb-helper: Instanciate shadow FB if configured in device's mode_config 2019-07-09 10:25:02 +02:00
drm_file.c
drm_flip_work.c
drm_format_helper.c
drm_fourcc.c
drm_framebuffer.c
drm_gem_cma_helper.c
drm_gem_framebuffer_helper.c dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
drm_gem_shmem_helper.c drm/shmem: Use mutex_trylock in drm_gem_shmem_purge 2019-08-23 11:54:45 -05:00
drm_gem_vram_helper.c drm/ttm: use gem vma_node 2019-08-06 08:21:54 +02:00
drm_gem.c dma-buf: rename reservation_object to dma_resv 2019-08-13 09:09:30 +02:00
drm_hashtab.c
drm_hdcp.c drm/hdcp: reference for srm file format 2019-08-06 13:18:42 +05:30
drm_internal.h
drm_ioc32.c Linus 5.3-rc1 2019-07-22 21:24:10 +02:00
drm_ioctl.c Linus 5.3-rc1 2019-07-22 21:24:10 +02:00
drm_irq.c
drm_kms_helper_common.c drm: fix module name in edid_firmware log message 2019-08-22 10:41:06 +03:00
drm_lease.c
drm_legacy_misc.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_legacy.h
drm_lock.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_memory.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_mipi_dbi.c drm: Use EOPNOTSUPP, not ENOTSUPP 2019-09-06 11:56:48 +02:00
drm_mipi_dsi.c bus_find_device: Unify the match callback with class_find_device 2019-06-24 05:22:31 +02:00
drm_mm.c drm: Allow range of 0 for drm_mm_insert_node_in_range() 2019-06-26 21:13:12 +01:00
drm_mode_config.c
drm_mode_object.c drm/kms: Catch mode_object lifetime errors 2019-07-10 17:17:14 +02:00
drm_modes.c Linus 5.3-rc1 2019-07-22 21:24:10 +02:00
drm_modeset_helper.c
drm_modeset_lock.c docs conversion for v5.3-rc1 2019-07-16 12:21:41 -07:00
drm_of.c
drm_panel_orientation_quirks.c drm: panel-orientation-quirks: Add extra quirk table entry for GPD MicroPC 2019-07-01 16:58:09 +02:00
drm_panel.c drm/panel: Initialise panel dev and funcs through drm_panel_init() 2019-08-24 10:42:48 +02:00
drm_pci.c
drm_plane_helper.c
drm_plane.c
drm_prime.c drm/prime: Ditch gem_prime_res_obj hook 2019-07-31 10:19:23 +02:00
drm_print.c drm/print: Add drm_err_printer() 2019-09-03 19:29:02 -04:00
drm_probe_helper.c drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
drm_property.c
drm_rect.c
drm_scatter.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_scdc_helper.c
drm_self_refresh_helper.c
drm_simple_kms_helper.c drm: Stop including drm_bridge.h from drm_crtc.h 2019-08-28 22:11:03 +02:00
drm_syncobj.c drm/syncobj: Add better overview documentation for syncobj (v2) 2019-08-12 16:58:52 +02:00
drm_sysfs.c drm: uevent for connector status change 2019-08-06 13:16:54 +05:30
drm_trace_points.c
drm_trace.h drm: Add high-precision time to vblank trace event 2019-09-03 09:46:18 +02:00
drm_vblank.c drm/vblank: Document and fix vblank count barrier semantics 2019-09-03 17:16:53 +02:00
drm_vm.c gpu/drm: fix a few kernel-doc "/**" mark warnings 2019-07-16 11:25:02 +02:00
drm_vma_manager.c
drm_vram_helper_common.c
drm_vram_mm_helper.c
drm_writeback.c
Kconfig drm/gm12u320: Move driver to drm/tiny 2019-07-31 15:17:03 +02:00
Makefile drm/gm12u320: Move driver to drm/tiny 2019-07-31 15:17:03 +02:00