On Sun, May 17, 2015 at 7:20 PM, Julian Margetson wrote: > Kernels 4.03 and 4.04 oops with HDMI connection on Acube Sam460ex amcc > 460ex powerpc board. > > 016a255b7835ee7e49a3eba3c14ba0bc0221a4f8 is the first bad commit > > commit 016a255b7835ee7e49a3eba3c14ba0bc0221a4f8 > Author: Alex Deucher > Date: Tue Apr 7 09:52:42 2015 -0400 > > drm/radeon: only mark audio as connected if the monitor supports it (v3) > > commit 0f55db36d49d45b80eff0c0a2a498766016f458b upstream. > > Otherwise the driver may try and send audio which may confuse the > monitor. > > v2: set pin to NULL if no audio > v3: avoid crash with analog encoders > > Signed-off-by: Alex Deucher > Signed-off-by: Greg Kroah-Hartman > > :040000 040000 de0366a6790f5c91d175bcb89cb34956bbe72b26 > bbdb5734961f824558152c7c34a840c78bc3a9a9 M drivers > The attached patch should fix it up. Alex > > > [ 2.587570] Linux agpgart interface v0.103 > [ 2.591997] [drm] Initialized drm 1.1.0 20060810 > [ 2.596892] [drm] radeon kernel modesetting enabled. > [ 2.602989] [drm] initializing kernel modesetting (VERDE 0x1002:0x683F > 0x1545:0x7750). > [ 2.611161] [drm] register mmio base: 0xe90000000 > [ 2.615935] [drm] register mmio size: 262144 > [ 2.952043] ATOM BIOS: C44501 > [ 2.955323] radeon 0001:81:00.0: VRAM: 1024M 0x0000000000000000 - > 0x000000003FFFFFFF (1024M used) > [ 2.964253] radeon 0001:81:00.0: GTT: 1024M 0x0000000040000000 - > 0x000000007FFFFFFF > [ 2.971938] [drm] Detected VRAM RAM=1024M, BAR=256M > [ 2.976840] [drm] RAM width 128bits DDR > [ 2.980898] [TTM] Zone kernel: Available graphics memory: 379358 kiB > [ 2.987383] [TTM] Zone highmem: Available graphics memory: 1034718 kiB > [ 2.993934] [TTM] Initializing pool allocator > [ 2.998331] [TTM] Initializing DMA pool allocator > [ 3.003153] [drm] radeon: 1024M of VRAM memory ready > [ 3.008162] [drm] radeon: 1024M of GTT memory ready. > [ 3.013203] [drm] Loading verde Microcode > [ 3.017266] [drm] Internal thermal controller with fan control > [ 3.023437] [drm] probing gen 2 caps for device aaa1:bed1 = 18cc41/0 > [ 3.077284] [drm] radeon: dpm initialized > [ 3.081503] [drm] GART: num cpu pages 262144, num gpu pages 262144 > [ 3.093142] [drm] probing gen 2 caps for device aaa1:bed1 = 18cc41/0 > [ 3.125984] [drm] PCIE GART of 1024M enabled (table at > 0x0000000000277000). > [ 3.133327] radeon 0001:81:00.0: WB enabled > [ 3.137565] radeon 0001:81:00.0: fence driver on ring 0 use gpu addr > 0x0000000040000c00 and cpu addr 0xffc01c00 > [ 3.147697] radeon 0001:81:00.0: fence driver on ring 1 use gpu addr > 0x0000000040000c04 and cpu addr 0xffc01c04 > [ 3.157827] radeon 0001:81:00.0: fence driver on ring 2 use gpu addr > 0x0000000040000c08 and cpu addr 0xffc01c08 > [ 3.167957] radeon 0001:81:00.0: fence driver on ring 3 use gpu addr > 0x0000000040000c0c and cpu addr 0xffc01c0c > [ 3.178078] radeon 0001:81:00.0: fence driver on ring 4 use gpu addr > 0x0000000040000c10 and cpu addr 0xffc01c10 > [ 3.209673] radeon 0001:81:00.0: fence driver on ring 5 use gpu addr > 0x0000000000075a18 and cpu addr 0xf90b5a18 > [ 3.219822] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). > [ 3.226457] [drm] Driver supports precise vblank timestamp query. > [ 3.232584] radeon 0001:81:00.0: radeon: MSI limited to 32-bit > [ 3.238466] ppc4xx_setup_msi_irqs: fail allocating msi interrupt > [ 3.244586] [drm] radeon: irq initialized. > [ 4.006339] [drm:r600_ring_test] *ERROR* radeon: ring 0 test failed > (scratch(0x850C)=0xCAFEDEAD) > [ 4.015198] radeon 0001:81:00.0: disabling GPU acceleration > [ 4.220071] [drm] Radeon Display Connectors > [ 4.224651] [drm] Connector 0: > [ 4.227787] [drm] HDMI-A-1 > [ 4.230754] [drm] HPD4 > [ 4.233328] [drm] DDC: 0x6570 0x6570 0x6574 0x6574 0x6578 0x6578 0x657c > 0x657c > [ 4.240806] [drm] Encoders: > [ 4.243815] [drm] DFP1: INTERNAL_UNIPHY2 > [ 4.248131] [drm] Connector 1: > [ 4.251227] [drm] DVI-I-1 > [ 4.254051] [drm] HPD2 > [ 4.256608] [drm] DDC: 0x6560 0x6560 0x6564 0x6564 0x6568 0x6568 0x656c > 0x656c > [ 4.264034] [drm] Encoders: > [ 4.267021] [drm] DFP2: INTERNAL_UNIPHY > [ 4.271223] [drm] CRT1: INTERNAL_KLDSCP_DAC1 > [ 4.390562] [drm] fb mappable at 0x80478000 > [ 4.394789] [drm] vram apper at 0x80000000 > [ 4.398905] [drm] size 8294400 > [ 4.401978] [drm] fb depth is 24 > [ 4.405225] [drm] pitch is 7680 > [ 4.700581] Console: switching to colour frame buffer device 240x67 > [ 4.779669] radeon 0001:81:00.0: fb0: radeondrmfb frame buffer device > [ 4.786489] radeon 0001:81:00.0: registered panic notifier > [ 4.796803] [drm] Initialized radeon 2.41.0 20080528 for 0001:81:00.0 on > minor 0 > > [ 31.191562] Unable to handle kernel paging request for data at address > 0x00000008 > [ 31.258832] Faulting instruction address: 0xc04a51bc > [ 34.049506] Oops: Kernel access of bad area, sig: 11 [#1] > [ 34.055246] PREEMPT Canyonlands > [ 34.058586] Modules linked in: > [ 34.061830] CPU: 0 PID: 1998 Comm: Xorg Not tainted 4.0.3-Sam460ex #2 > [ 34.068633] task: edee4c60 ti: ede8a000 task.ti: ede8a000 > [ 34.074334] NIP: c04a51bc LR: c04a546c CTR: c03e5050 > [ 34.079578] REGS: ede8bc30 TRAP: 0300 Not tainted (4.0.3-Sam460ex) > [ 34.086381] MSR: 00029000 CR: 20004422 XER: 00000000 > [ 34.092944] DEAR: 00000008 ESR: 00000000 > GPR00: c04a5438 ede8bce0 edee4c60 eea84000 00000000 00000000 c0710000 > 00000000 > GPR08: 00000000 00000000 eeac0400 ede8bce0 20004444 b7a55afc b80efab0 > b80ee530 > GPR16: 00000000 ffffffff 6f23c730 ede8be18 c03add44 eeac0578 00000001 > 00004000 > GPR24: 00004000 c0719b98 fffffff2 00000001 eeb61200 eea84000 eea8df00 > 00000000 > [ 34.127485] NIP [c04a51bc] radeon_audio_enable+0x4/0x18 > [ 34.133000] LR [c04a546c] radeon_audio_detect+0xd4/0x104 > [ 34.138604] Call Trace: > [ 34.141185] [ede8bce0] [c04a5438] radeon_audio_detect+0xa0/0x104 > (unreliable) > [ 34.148771] [ede8bd00] [c03e6958] radeon_dvi_detect+0x390/0x3b4 > [ 34.155046] [ede8bd30] [c0391cec] > drm_helper_probe_single_connector_modes_merge_bits+0xf4/0x448 > [ 34.164253] [ede8bd70] [c03ade28] drm_mode_getconnector+0xe4/0x334 > [ 34.170796] [ede8be10] [c03a0be8] drm_ioctl+0x348/0x464 > [ 34.176343] [ede8bed0] [c00ce2e8] do_vfs_ioctl+0x52c/0x6e8 > [ 34.182158] [ede8bf20] [c00ce4e4] SyS_ioctl+0x40/0x68 > [ 34.187515] [ede8bf40] [c000ab1c] ret_from_syscall+0x0/0x3c > [ 34.193417] --- interrupt: c01 at 0x6fb001dc > [ 34.193417] LR = 0x6fb00100 > [ 34.201216] Instruction dump: > [ 34.204368] 8129012c 806a0018 2f890000 419e0018 81290004 2f890000 > 419e000c 7d2903a6 > [ 34.212674] 4e800420 38600000 4e800020 81231cd8 <81290008> 2f890000 > 4d9e0020 7d2903a6 > [ 34.376219] ---[ end trace 803e15e46b991816 ]--- > [ 34.380843] > * Starting Mount filesystems on boot[ OK ] > * > > >