linux/drivers/gpu/drm
Dave Airlie 7f98ca454a drm/radeon: fix hotplug race at startup
We apparantly get a hotplug irq before we've initialised
modesetting,

[drm] Loading R100 Microcode
BUG: unable to handle kernel NULL pointer dereference at   (null)
IP: [<c125f56f>] __mutex_lock_slowpath+0x23/0x91
*pde = 00000000
Oops: 0002 [#1]
Modules linked in: radeon(+) drm_kms_helper ttm drm i2c_algo_bit backlight pcspkr psmouse evdev sr_mod input_leds led_class cdrom sg parport_pc parport floppy intel_agp intel_gtt lpc_ich acpi_cpufreq processor button mfd_core agpgart uhci_hcd ehci_hcd rng_core snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm usbcore usb_common i2c_i801 i2c_core snd_timer snd soundcore thermal_sys
CPU: 0 PID: 15 Comm: kworker/0:1 Not tainted 4.2.0-rc7-00015-gbf67402 #111
Hardware name: MicroLink                               /D850MV                         , BIOS MV85010A.86A.0067.P24.0304081124 04/08/2003
Workqueue: events radeon_hotplug_work_func [radeon]
task: f6ca5900 ti: f6d3e000 task.ti: f6d3e000
EIP: 0060:[<c125f56f>] EFLAGS: 00010282 CPU: 0
EIP is at __mutex_lock_slowpath+0x23/0x91
EAX: 00000000 EBX: f5e900fc ECX: 00000000 EDX: fffffffe
ESI: f6ca5900 EDI: f5e90100 EBP: f5e90000 ESP: f6d3ff0c
 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
CR0: 8005003b CR2: 00000000 CR3: 36f61000 CR4: 000006d0
Stack:
 f5e90100 00000000 c103c4c1 f6d2a5a0 f5e900fc f6df394c c125f162 f8b0faca
 f6d2a5a0 c138ca00 f6df394c f7395600 c1034741 00d40000 00000000 f6d2a5a0
 c138ca00 f6d2a5b8 c138ca10 c1034b58 00000001 f6d40000 f6ca5900 f6d0c940
Call Trace:
 [<c103c4c1>] ? dequeue_task_fair+0xa4/0xb7
 [<c125f162>] ? mutex_lock+0x9/0xa
 [<f8b0faca>] ? radeon_hotplug_work_func+0x17/0x57 [radeon]
 [<c1034741>] ? process_one_work+0xfc/0x194
 [<c1034b58>] ? worker_thread+0x18d/0x218
 [<c10349cb>] ? rescuer_thread+0x1d5/0x1d5
 [<c103742a>] ? kthread+0x7b/0x80
 [<c12601c0>] ? ret_from_kernel_thread+0x20/0x30
 [<c10373af>] ? init_completion+0x18/0x18
Code: 42 08 e8 8e a6 dd ff c3 57 56 53 83 ec 0c 8b 35 48 f7 37 c1 8b 10 4a 74 1a 89 c3 8d 78 04 8b 40 08 89 63

Reported-and-Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-08-21 19:43:18 +10:00
..
amd Revert "drm/amdgpu: Configure doorbell to maximum slots" 2015-08-12 12:24:04 -04:00
armada Merge branch 'drm-armada-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-fixes 2015-07-17 10:06:04 +10:00
ast
atmel-hlcdc drm/atmel-hlcdc: Compile suspend/resume for PM_SLEEP only 2015-08-18 10:47:21 +02:00
bochs
bridge drm/exynos: atomic dpms support 2015-06-20 00:32:52 +09:00
cirrus
exynos drm/exynos/fimc: fix runtime pm support 2015-08-11 17:21:35 +09:00
gma500
i2c Merge branch 'drm-tda998x-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-08-07 04:48:46 +03:00
i810
i915 drm/i915: Avoid TP3 on CHV 2015-08-19 11:13:59 +03:00
imx drm/imx: tve: fix media bus format for VGA output 2015-07-10 11:02:47 +02:00
mga
mgag200 drm/mgag200: Reject non-character-cell-aligned mode widths 2015-06-16 10:01:16 +10:00
msm drm/msm/mdp5: release SMB (shared memory blocks) in various cases 2015-07-29 16:38:24 -04:00
nouveau Revert "drm/nouveau/fifo/gk104: kick channels when deactivating them" 2015-08-14 09:50:37 +10:00
omapdrm drm/omap: replace ALIGN(PAGE_SIZE) by PAGE_ALIGN 2015-07-02 15:58:07 +03:00
panel drm/panel: simple: Add bus format for HannStar HSD100PXN1 2015-06-12 16:40:42 +02:00
qxl drm/qxl: Propagate correctly errors from qxlhw_handle_to_bo 2015-06-05 11:00:52 +10:00
r128
radeon drm/radeon: fix hotplug race at startup 2015-08-21 19:43:18 +10:00
rcar-du drm: rcar-du: Use the drm atomic state duplication helpers for planes 2015-06-16 14:25:55 +03:00
rockchip Merge branch 'drm-rockchip-2015-07-13' of https://github.com/markyzq/kernel-drm-rockchip into drm-fixes 2015-07-17 10:25:02 +10:00
savage
shmobile
sis
sti drm/sti: vtg fix CEA-861E video format timing error 2015-06-08 15:28:28 +02:00
tdfx
tegra drm/tegra: Changes for v4.2-rc1 2015-06-18 12:53:54 +10:00
tilcdc drm/tilcdc: Add DRM_TILCDC_SLAVE_COMPAT for ti,tilcdc,slave binding support 2015-05-27 13:13:33 +03:00
ttm drm/ttm: recognize ARM64 arch in ioprot handler 2015-07-24 11:51:14 +10:00
udl
vgem drm/vgem: Set unique to "vgem" 2015-06-24 11:20:46 +10:00
via
virtio virtio-gpu: add locking for vbuf pool 2015-06-16 11:22:41 +02:00
vmwgfx drm/vmwgfx: Fix execbuf locking issues 2015-08-14 09:49:19 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c drm/atomic-helpers: Make encoder picking more robust 2015-08-04 11:10:41 +02:00
drm_atomic.c drm/atomic: Extract needs_modeset function 2015-06-19 17:25:01 +02:00
drm_auth.c
drm_bridge.c drm/DocBook: Add more drm_bridge documentation 2015-05-21 13:56:51 +02:00
drm_bufs.c
drm_cache.c drm: Avoid the double clflush on the last cache line in drm_clflush_virt_range() 2015-06-19 17:25:17 +02:00
drm_context.c
drm_crtc_helper.c drm: Add drm_atomic_set_mode_for_crtc 2015-05-26 15:50:34 +02:00
drm_crtc_internal.h
drm_crtc.c drm: Stop resetting connector state to unknown 2015-07-22 14:52:26 +02:00
drm_debugfs.c
drm_dma.c
drm_dp_helper.c
drm_dp_mst_topology.c Merge tag 'topic/drm-fixes-2015-08-14' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-08-15 14:52:12 +10:00
drm_drv.c drm: Always enable atomic API 2015-06-24 11:21:35 +10:00
drm_edid_load.c
drm_edid.c Merge tag 'topic/drm-misc-2015-05-19' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-05-20 09:19:58 +10:00
drm_encoder_slave.c
drm_fb_cma_helper.c
drm_fb_helper.c
drm_flip_work.c drm/core: get rid of -Iinclude/drm 2015-05-13 11:28:22 +02:00
drm_fops.c drm/mode: Add user blob-creation ioctl 2015-05-22 16:18:28 +02:00
drm_gem_cma_helper.c drm/cma: Fix 64-bit size_t build warnings 2015-06-15 07:45:49 +02:00
drm_gem.c
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h
drm_ioc32.c drm: Provide compat ioctl for addfb2.1 2015-07-15 11:38:38 +02:00
drm_ioctl.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-06-26 13:18:51 -07:00
drm_irq.c drm/vblank: Use u32 consistently for vblank counters 2015-08-07 14:35:53 +02:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c
drm_mm.c drm: clean up drm_mm debugfs output 2015-05-29 09:17:57 +10:00
drm_modes.c drm/mode: Unstatic kernel-userspace mode conversion 2015-05-22 16:18:21 +02:00
drm_modeset_lock.c
drm_of.c
drm_panel.c
drm_pci.c
drm_plane_helper.c drm/plane-helper: Adapt cursor hack to transitional helpers 2015-05-22 08:48:08 +03:00
drm_platform.c
drm_prime.c drm: prime: Document gem_prime_mmap 2015-06-19 17:50:05 +02:00
drm_probe_helper.c
drm_rect.c
drm_scatter.c
drm_sysfs.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-06-26 13:18:51 -07:00
drm_trace_points.c
drm_trace.h
drm_vm.c
drm_vma_manager.c
Kconfig drm/amdgpu: add core driver (v4) 2015-06-03 21:03:15 -04:00
Makefile drm/amdgpu: add core driver (v4) 2015-06-03 21:03:15 -04:00