- 12 Oct, 2018 22 commits
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James Zhu authored
Apply new UMC enable for VNC Dynamic Power Gate mode Signed-off-by:
James Zhu <James.Zhu@amd.com> Acked-by:
Leo Liu <leo.liu@amd.com> Acked-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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James Zhu authored
Remove Sitatic Power Gate mode unused steps during vcn start Signed-off-by:
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James Zhu authored
Add Static Power Gate mode Register XX check Signed-off-by:
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James Zhu authored
Move Static Power Gate mode mc resume after MPC control Signed-off-by:
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James Zhu authored
Update Static Power Gate mode VCN global tiling Signed-off-by:
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James Zhu authored
Update Static Power Gate mode VCN memory control Signed-off-by:
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James Zhu authored
Apply new UMC enable for VNC Dynamic Power Gate mode start Signed-off-by:
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James Zhu authored
Remove Dynamic Power Gate mode unused steps during VCN start Signed-off-by:
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James Zhu authored
Add Dynamic Power Gate mode Register XX check Signed-off-by:
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James Zhu authored
Update Dynamic Power Gate mode VCN global tiling registers Signed-off-by:
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James Zhu authored
Update Dynamic Power Gate mode VCN memory control Signed-off-by:
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James Zhu authored
Reduce unnecessary local variable. Signed-off-by:
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James Zhu authored
Add ring write/read pointer check for VCN dynamic power gate mode stop,to make sure that no job is left in ring before turn off DPG mode. Signed-off-by:
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James Zhu authored
Update latest static power gate mode stop function for VCN Signed-off-by:
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James Zhu authored
Update latest UVD_MPC register for VCN. Use defined macro to replace value for readability. Signed-off-by:
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James Zhu authored
Add new register offset/mask for VCN to support latest VCN implementation. Signed-off-by:
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hersen wu authored
[WHY] dp debugfs file does not exist for eDP under /sys/kernel/debug/dri/0/eDP-1. the root is phy debugfs is created for dp connector only. [HOW] for eDP connector, create phy debugfs too. Signed-off-by:Hersen Wu <hersenxs.wu@amd.com> Reviewed-by:
David Francis <David.Francis@amd.com> Acked-by:
Leo Li <sunpeng.li@amd.com> Signed-off-by:
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Emily Deng authored
For sriov, when first run windows guest, then run linux guest, the gds vmid0 size will be reset to 0 by windows guest. So if the value has been reset to 0, then set the value to the default value in linux guest. v2: Fixed value instead of reading mmGDS_VMID0_SIZE. v3: Set the default value of the switch. Signed-off-by:
Emily Deng <Emily.Deng@amd.com> Reviewed-by:
Junwei Zhang <Jerry.Zhang@amd.com> Signed-off-by:
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Christian König authored
We need to make sure that we don't race between job completion and timeout. v2: put revert label after calling the handling manually Signed-off-by:
Christian König <christian.koenig@amd.com> Reviewed-by:
Nayan Deshmukh <nayan26deshmukh@gmail.com> Signed-off-by:
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Christian König authored
Cleanup starting the timeout a bit. Signed-off-by:
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Evan Quan authored
Give user some hints when the power profile setting is not supported. Signed-off-by:
Evan Quan <evan.quan@amd.com> Reviewed-by:
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Evan Quan authored
Correctly translate the power profile specified by user to workload type accepted by SMU fw. Signed-off-by:
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- 11 Oct, 2018 4 commits
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git://people.freedesktop.org/~agd5f/linuxDave Airlie authored
Add a new list.h helper for doing bulk updates. Used by ttm. - Fixes for display underflow on VI APUs at 4K with UVD running - Endian fixes for powerplay on vega - DC fixes for interlaced video - Vega20 powerplay fixes - RV/RV2/PCO powerplay fixes - Fix for spurious ACPI events on HG laptops - Fix a memory leak in DC on driver unload - Fixes for manual fan control mode switching - Suspend/resume robustness fixes - Fix display handling on RV2 - VCN fixes for DPG on PCO - Misc code cleanups and warning fixes Signed-off-by:
Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexdeucher@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181011014739.3117-1-alexander.deucher@amd.com
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Dave Airlie authored
Merge tag 'drm-misc-next-fixes-2018-10-10' of git://anongit.freedesktop.org/drm/drm-misc into drm-next - Fix build failure without CONFIG_DRM_FBDEV_EMULATION (Arnd) - Add Maxime to drm-misc maintainer group (Sean) Cc: Arnd Bergmann <arnd@arndb.de> Cc: Sean Paul <sean@poorly.run> Signed-off-by:
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Dave Airlie authored
Merge branch 'mediatek-drm-next-4.20' of https://github.com/ckhu-mediatek/linux.git-tags into drm-next This include hdmi output support for mt2701 and mt7623. Signed-off-by:
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git://github.com/skeggsb/linuxDave Airlie authored
Just initial HDMI 2.0 support, and a bunch of other cleanups. Signed-off-by:
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- 10 Oct, 2018 14 commits
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Gustavo A. R. Silva authored
In case memory resources for *bl_desc* were allocated, release them before return. Addresses-Coverity-ID: 1472021 ("Resource leak") Fixes: 0d466901 ("drm/nouveau/secboot/acr: Remove VLA usage") Signed-off-by:Gustavo A. R. Silva <gustavo@embeddedor.com> Reviewed-by:
John Hubbard <jhubbard@nvidia.com> Reviewed-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
Ben Skeggs <bskeggs@redhat.com>
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Ilia Mirkin authored
Scrambling is required for supporting any mode over 340MHz. If it's not supported, reject any modes that would require it. Signed-off-by:
Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by:
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Ilia Mirkin authored
When SCDC is supported, make sure that we configure the GPU and monitor to the same parameters. Signed-off-by:
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Ilia Mirkin authored
The register programmed by the clock method needs to contain a different setting for the link speed as well as special divider settings. Signed-off-by:
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Ilia Mirkin authored
Signed-off-by:
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Ilia Mirkin authored
High pixel clocks are required to use a 40 TMDS divider instead of 10, and even low ones may optionally use scrambling depending on device support. Signed-off-by:
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Lyude Paul authored
Per the documentation in drm_get_pci_dev(), this function is deprecated and shouldn't be used anymore. As it turns out, we're going to need to stop using drm_get_pci_dev() anyway in order to allow us to turn off the card before full system shutdowns, otherwise we'll hit race conditions with userspace while trying to tear down the card on shutdown. So, start using drm_dev_get() and drm_dev_put(), and just turn our load/unload callbacks into open coded init/fini() functions. Signed-off-by:
Lyude Paul <lyude@redhat.com> Cc: Karol Herbst <kherbst@redhat.com> Signed-off-by:
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Lyude Paul authored
We forget to free drm in all instances of failure, and additionally also forget to destroy the master client if the other client fails initialization. Signed-off-by:
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Lyude Paul authored
There's literally no difference between any of the backlight init functions besides the backlight properties they set and the backlight callbacks that they set, so move all of the duplicated backlight init code out of there and into nouveau_backlight_init(). This gets rid of a lot of copy pasta! Changes since v1: - Some of the pre-refactor callbacks were storing nv_encoder in callback data for the backlight devices that they registered, as opposed to nouveau_drm. This got missed and caused some bugs that didn't originally appear on my setup (NULL kernel derefs) for some reason. So, fix this by finding the nouveau_encoder in nouveau_backlight_init(), and using that as the callback data for all gens instead even if they don't care about the encoder. Signed-off-by:
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Lyude Paul authored
Still no functional changes. Signed-off-by:
Karol Herbst <kherbst@redhat.com> Signed-off-by:
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Lyude Paul authored
More consistent with the rest of the codebase, no functional changes here. Signed-off-by:
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Lyude Paul authored
Currently module unloading is broken in nouveau due to a rather annoying race condition resulting from nouveau_backlight.c having gone a bit stale over time: [ 1960.791143] ================================================================== [ 1960.791394] BUG: KASAN: use-after-free in nouveau_backlight_exit+0x112/0x150 [nouveau] [ 1960.791460] Read of size 4 at addr ffff88075accf350 by task zsh/11185 [ 1960.791521] [ 1960.791545] CPU: 7 PID: 11185 Comm: zsh Kdump: loaded Tainted: G O 4.18.0Lyude-Test+ #4 [ 1960.791580] Hardware name: LENOVO 20EQS64N0B/20EQS64N0B, BIOS N1EET79W (1.52 ) 07/13/2018 [ 1960.791628] Call Trace: [ 1960.791680] dump_stack+0xa4/0xfd [ 1960.791721] print_address_description+0x71/0x239 [ 1960.791833] ? nouveau_backlight_exit+0x112/0x150 [nouveau] [ 1960.791877] kasan_report.cold.6+0x242/0x2fe [ 1960.791919] __asan_report_load4_noabort+0x19/0x20 [ 1960.792012] nouveau_backlight_exit+0x112/0x150 [nouveau] [ 1960.792081] nouveau_display_destroy+0x76/0x150 [nouveau] [ 1960.792150] nouveau_drm_device_fini+0xb7/0x190 [nouveau] [ 1960.792265] nouveau_drm_device_remove+0x14b/0x1d0 [nouveau] [ 1960.792347] ? nouveau_cli_work_queue+0x2e0/0x2e0 [nouveau] [ 1960.792378] ? trace_hardirqs_on_caller+0x38b/0x570 [ 1960.792406] ? trace_hardirqs_on+0xd/0x10 [ 1960.792472] nouveau_drm_remove+0x37/0x50 [nouveau] [ 1960.792502] pci_device_remove+0x112/0x2d0 [ 1960.792530] ? pcibios_free_irq+0x10/0x10 [ 1960.792558] ? kasan_check_write+0x14/0x20 [ 1960.792587] device_release_driver_internal+0x35c/0x650 [ 1960.792617] device_release_driver+0x12/0x20 [ 1960.792643] pci_stop_bus_device+0x172/0x1e0 [ 1960.792671] pci_stop_and_remove_bus_device_locked+0x1a/0x30 [ 1960.792715] remove_store+0xcb/0xe0 [ 1960.792753] ? sriov_numvfs_store+0x2e0/0x2e0 [ 1960.792779] ? __lock_is_held+0xb5/0x140 [ 1960.792808] ? component_add+0x530/0x530 [ 1960.792834] dev_attr_store+0x3f/0x70 [ 1960.792859] ? sysfs_file_ops+0x11d/0x170 [ 1960.792885] sysfs_kf_write+0x104/0x150 [ 1960.792915] ? sysfs_file_ops+0x170/0x170 [ 1960.792940] kernfs_fop_write+0x24f/0x400 [ 1960.792978] ? __lock_acquire+0x6ea/0x47f0 [ 1960.793021] __vfs_write+0xeb/0x760 [ 1960.793048] ? kernel_read+0x130/0x130 [ 1960.793076] ? __lock_is_held+0xb5/0x140 [ 1960.793107] ? rcu_read_lock_sched_held+0xdd/0x110 [ 1960.793135] ? rcu_sync_lockdep_assert+0x78/0xb0 [ 1960.793162] ? __sb_start_write+0x183/0x220 [ 1960.793189] vfs_write+0x14d/0x4a0 [ 1960.793229] ksys_write+0xd2/0x1b0 [ 1960.793255] ? __ia32_sys_read+0xb0/0xb0 [ 1960.793298] ? fput+0x1d/0x120 [ 1960.793324] ? filp_close+0xf3/0x130 [ 1960.793349] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 1960.793380] __x64_sys_write+0x73/0xb0 [ 1960.793407] do_syscall_64+0xaa/0x400 [ 1960.793433] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1960.793460] RIP: 0033:0x7f59df433164 [ 1960.793486] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 8d 05 81 38 2d 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 f5 53 [ 1960.793541] RSP: 002b:00007ffd70ee2fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1960.793576] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f59df433164 [ 1960.793620] RDX: 0000000000000002 RSI: 00005578088640c0 RDI: 0000000000000001 [ 1960.793665] RBP: 00005578088640c0 R08: 00007f59df7038c0 R09: 00007f59e0995b80 [ 1960.793696] R10: 000000000000000a R11: 0000000000000246 R12: 00007f59df702760 [ 1960.793730] R13: 0000000000000002 R14: 00007f59df6fd760 R15: 0000000000000002 [ 1960.793768] [ 1960.793790] Allocated by task 11167: [ 1960.793816] save_stack+0x43/0xd0 [ 1960.793841] kasan_kmalloc+0xc4/0xe0 [ 1960.793880] kasan_slab_alloc+0x11/0x20 [ 1960.793905] kmem_cache_alloc+0xd7/0x270 [ 1960.793944] getname_flags+0xbd/0x520 [ 1960.793969] user_path_at_empty+0x23/0x50 [ 1960.793994] do_faccessat+0x1fc/0x5d0 [ 1960.794018] __x64_sys_access+0x59/0x80 [ 1960.794043] do_syscall_64+0xaa/0x400 [ 1960.794067] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1960.794093] [ 1960.794127] Freed by task 11167: [ 1960.794152] save_stack+0x43/0xd0 [ 1960.794190] __kasan_slab_free+0x139/0x190 [ 1960.794215] kasan_slab_free+0xe/0x10 [ 1960.794239] kmem_cache_free+0xcb/0x2c0 [ 1960.794264] putname+0xad/0xe0 [ 1960.794287] filename_lookup.part.59+0x1f1/0x360 [ 1960.794313] user_path_at_empty+0x3e/0x50 [ 1960.794338] do_faccessat+0x1fc/0x5d0 [ 1960.794362] __x64_sys_access+0x59/0x80 [ 1960.794393] do_syscall_64+0xaa/0x400 [ 1960.794421] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1960.794461] [ 1960.794483] The buggy address belongs to the object at ffff88075acceac0 [ 1960.794483] which belongs to the cache names_cache of size 4096 [ 1960.794540] The buggy address is located 2192 bytes inside of [ 1960.794540] 4096-byte region [ffff88075acceac0, ffff88075accfac0) [ 1960.794581] The buggy address belongs to the page: [ 1960.794609] page:ffffea001d6b3200 count:1 mapcount:0 mapping:ffff880778e4b1c0 index:0x0 compound_mapcount: 0 [ 1960.794651] flags: 0x8000000000008100(slab|head) [ 1960.794679] raw: 8000000000008100 ffffea001d39e808 ffffea001d39ea08 ffff880778e4b1c0 [ 1960.794739] raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 [ 1960.794785] page dumped because: kasan: bad access detected [ 1960.794813] [ 1960.794834] Memory state around the buggy address: [ 1960.794861] ffff88075accf200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1960.794894] ffff88075accf280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1960.794925] >ffff88075accf300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1960.794956] ^ [ 1960.794985] ffff88075accf380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1960.795017] ffff88075accf400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1960.795061] ================================================================== [ 1960.795106] Disabling lock debugging due to kernel taint [ 1960.795131] ------------[ cut here ]------------ [ 1960.795148] ida_remove called for id=1802201963 which is not allocated. [ 1960.795193] WARNING: CPU: 7 PID: 11185 at lib/idr.c:521 ida_remove+0x184/0x210 [ 1960.795213] Modules linked in: nouveau(O) mxm_wmi ttm i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm joydev vfat fat intel_rapl x86_pkg_temp_thermal coretemp crc32_pclmul iTCO_wdt psmouse wmi_bmof mei_me tpm_tis mei tpm_tis_core tpm i2c_i801 thinkpad_acpi pcc_cpufreq crc32c_intel serio_raw xhci_pci xhci_hcd wmi video i2c_dev i2c_core [ 1960.795305] CPU: 7 PID: 11185 Comm: zsh Kdump: loaded Tainted: G B O 4.18.0Lyude-Test+ #4 [ 1960.795330] Hardware name: LENOVO 20EQS64N0B/20EQS64N0B, BIOS N1EET79W (1.52 ) 07/13/2018 [ 1960.795352] RIP: 0010:ida_remove+0x184/0x210 [ 1960.795370] Code: 4c 89 f7 e8 ae c8 00 00 eb 22 41 83 c4 02 4c 89 e8 41 83 fc 3f 0f 86 64 ff ff ff 44 89 fe 48 c7 c7 20 94 1e 83 e8 54 ed 81 fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 48 01 c3 c7 03 00 00 00 00 c7 [ 1960.795402] RSP: 0018:ffff88074d4df7b8 EFLAGS: 00010082 [ 1960.795421] RAX: 0000000000000000 RBX: 1ffff100e9a9befa RCX: ffffffff81479975 [ 1960.795440] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88077c1de690 [ 1960.795460] RBP: ffff88074d4df878 R08: ffffed00ef83bcd3 R09: ffffed00ef83bcd2 [ 1960.795479] R10: ffffed00ef83bcd2 R11: ffff88077c1de697 R12: 000000000000036b [ 1960.795498] R13: 0000000000000202 R14: ffffffffa0aa7fa0 R15: 000000006b6b6b6b [ 1960.795518] FS: 00007f59e0995b80(0000) GS:ffff88077c1c0000(0000) knlGS:0000000000000000 [ 1960.795553] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1960.795571] CR2: 00007f59e09a2010 CR3: 00000004a1a70005 CR4: 00000000003606e0 [ 1960.795596] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1960.795629] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1960.795649] Call Trace: [ 1960.795667] ? ida_destroy+0x1d0/0x1d0 [ 1960.795686] ? kasan_check_write+0x14/0x20 [ 1960.795704] ? do_raw_spin_lock+0xc2/0x1c0 [ 1960.795724] ida_simple_remove+0x26/0x40 [ 1960.795794] nouveau_backlight_exit+0x9d/0x150 [nouveau] [ 1960.795867] nouveau_display_destroy+0x76/0x150 [nouveau] [ 1960.795930] nouveau_drm_device_fini+0xb7/0x190 [nouveau] [ 1960.795989] nouveau_drm_device_remove+0x14b/0x1d0 [nouveau] [ 1960.796047] ? nouveau_cli_work_queue+0x2e0/0x2e0 [nouveau] [ 1960.796067] ? trace_hardirqs_on_caller+0x38b/0x570 [ 1960.796089] ? trace_hardirqs_on+0xd/0x10 [ 1960.796146] nouveau_drm_remove+0x37/0x50 [nouveau] [ 1960.796167] pci_device_remove+0x112/0x2d0 [ 1960.796186] ? pcibios_free_irq+0x10/0x10 [ 1960.796218] ? kasan_check_write+0x14/0x20 [ 1960.796237] device_release_driver_internal+0x35c/0x650 [ 1960.796257] device_release_driver+0x12/0x20 [ 1960.796289] pci_stop_bus_device+0x172/0x1e0 [ 1960.796308] pci_stop_and_remove_bus_device_locked+0x1a/0x30 [ 1960.796328] remove_store+0xcb/0xe0 [ 1960.796345] ? sriov_numvfs_store+0x2e0/0x2e0 [ 1960.796364] ? __lock_is_held+0xb5/0x140 [ 1960.796383] ? component_add+0x530/0x530 [ 1960.796401] dev_attr_store+0x3f/0x70 [ 1960.796419] ? sysfs_file_ops+0x11d/0x170 [ 1960.796436] sysfs_kf_write+0x104/0x150 [ 1960.796454] ? sysfs_file_ops+0x170/0x170 [ 1960.796471] kernfs_fop_write+0x24f/0x400 [ 1960.796488] ? __lock_acquire+0x6ea/0x47f0 [ 1960.796520] __vfs_write+0xeb/0x760 [ 1960.796538] ? kernel_read+0x130/0x130 [ 1960.796556] ? __lock_is_held+0xb5/0x140 [ 1960.796590] ? rcu_read_lock_sched_held+0xdd/0x110 [ 1960.796608] ? rcu_sync_lockdep_assert+0x78/0xb0 [ 1960.796626] ? __sb_start_write+0x183/0x220 [ 1960.796648] vfs_write+0x14d/0x4a0 [ 1960.796666] ksys_write+0xd2/0x1b0 [ 1960.796684] ? __ia32_sys_read+0xb0/0xb0 [ 1960.796701] ? fput+0x1d/0x120 [ 1960.796732] ? filp_close+0xf3/0x130 [ 1960.796749] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 1960.796768] __x64_sys_write+0x73/0xb0 [ 1960.796800] do_syscall_64+0xaa/0x400 [ 1960.796818] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1960.796836] RIP: 0033:0x7f59df433164 [ 1960.796854] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 8d 05 81 38 2d 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 f5 53 [ 1960.796884] RSP: 002b:00007ffd70ee2fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1960.796906] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f59df433164 [ 1960.796926] RDX: 0000000000000002 RSI: 00005578088640c0 RDI: 0000000000000001 [ 1960.796946] RBP: 00005578088640c0 R08: 00007f59df7038c0 R09: 00007f59e0995b80 [ 1960.796966] R10: 000000000000000a R11: 0000000000000246 R12: 00007f59df702760 [ 1960.796985] R13: 0000000000000002 R14: 00007f59df6fd760 R15: 0000000000000002 [ 1960.797008] irq event stamp: 509990 [ 1960.797026] hardirqs last enabled at (509989): [<ffffffff8119ff78>] flush_work+0x4b8/0x6d0 [ 1960.797063] hardirqs last disabled at (509990): [<ffffffff8297c395>] _raw_spin_lock_irqsave+0x25/0x60 [ 1960.797085] softirqs last enabled at (509744): [<ffffffff82c005ad>] __do_softirq+0x5ad/0x8c0 [ 1960.797121] softirqs last disabled at (509735): [<ffffffff8115aa15>] irq_exit+0x1a5/0x1e0 [ 1960.797142] ---[ end trace fb1342325f1846b8 ]--- While I haven't actually gone into the details of what's causing this to happen (maybe the kernel removes the backlight device in the device core before we get to it?), it doesn't really matter anyway because the way nouveau handles backlights has long since been deprecated. According to the documentation on the drm_connector->late_register() hook, the ->late_register() hook should be used for adding extra connector-related devices. Vice versa, the ->early_unregister() hook is meant to be used for removing those devices. So: gut nouveau_drm->bl_list and nouveau_drm->backlight, and replace them with per-connector backlight structures. Additionally, move backlight registration/teardown into the ->late_register() and ->early_unregister() hooks so that DRM can give us a chance to remove the backlight before the connector is even removed. This appears to fix the problem once and for all. Changes since v2: - Use NV_INFO_ONCE for printing GMUX information, since otherwise this will end up printing that message for as many times as we have connectors Signed-off-by:
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Lyude Paul authored
Since we're about to use this in nouveau_backlight.c. Same thing as DRM_WARN_ONCE, DRM_INFO_ONCE, etc... Signed-off-by:
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Lyude Paul authored
Remember, ida IDs start at 0, not 1! Signed-off-by:
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