[Bug 103347] [dp] intel_dp.c:1554 WARN_ON(len <=8)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103347

--- Comment #9 from Jani Saarinen <jani.saarinen at intel.com> ---
This from CI systems:
CRTC info
---------
CRTC 46: pipe: A, active=yes, (size=1024x768), dither=no, bpp=24
        fb: 110, pos: 0x0, size: 1024x768
        encoder 88: type: DDI C, connectors:
                connector 89: type: DP-2, status: connected, mode:
                id 0:"1024x768" freq 60 clock 65000 hdisp 1024 hss 1048 hse
1184 htot 1344 vdisp 768 vss 771 vse 777 vtot 806 type 0x48 flags 0xa
        cursor visible? no, position (0, 0), size 0x0, addr 0x00000000
        num_scalers=2, scaler_users=0 scaler_id=-1, scalers[0]: use=no, mode=0,
scalers[1]: use=no, mode=0
        --Plane id 28: type=PRI, crtc_pos=   0x   0, crtc_size=1024x 768,
src_pos=0.0000x0.0000, src_size=1024.0000x768.0000, format=XR24 little-endian
(0x34325258), rotation=0 (0x00000001)
        --Plane id 33: type=OVL, crtc_pos=   0x   0, crtc_size=   0x   0,
src_pos=0.0000x0.0000, src_size=0.0000x0.0000, format=N/A, rotation=0
(0x00000001)
        --Plane id 38: type=OVL, crtc_pos=   0x   0, crtc_size=   0x   0,
src_pos=0.0000x0.0000, src_size=0.0000x0.0000, format=N/A, rotation=0
(0x00000001)
        --Plane id 43: type=CUR, crtc_pos=   0x   0, crtc_size=   0x   0,
src_pos=0.0000x0.0000, src_size=0.0000x0.0000, format=N/A, rotation=0
(0x00000001)
        underrun reporting: cpu=yes pch=yes 
CRTC 65: pipe: B, active=no, (size=1024x768), dither=no, bpp=24
        underrun reporting: cpu=yes pch=yes 
CRTC 79: pipe: C, active=no, (size=1024x768), dither=no, bpp=24
        underrun reporting: cpu=yes pch=yes 

Connector info
--------------
connector 81: type DP-1, status: disconnected
        DPCD rev: 12
        audio support: no
        DP branch device present: yes
                Type: DisplayPort
                ID: MC2800
                HW: 2.2
                SW: 1.60
        modes:
connector 89: type DP-2, status: connected
        name: 
        physical dimensions: 600x340mm
        subpixel order: Unknown
        CEA rev: 0
        DPCD rev: 11
        audio support: no
        DP branch device present: yes
                Type: VGA
                ID: 
                HW: 0.0
                SW: 0.0
        modes:
                id 96:"1024x768" freq 60 clock 65000 hdisp 1024 hss 1048 hse
1184 htot 1344 vdisp 768 vss 771 vse 777 vtot 806 type 0x48 flags 0xa
                id 104:"1920x1080" freq 60 clock 148500 hdisp 1920 hss 2008 hse
2052 htot 2200 vdisp 1080 vss 1084 vse 1089 vtot 1125 type 0x40 flags 0xa
                id 103:"1600x1200" freq 60 clock 162000 hdisp 1600 hss 1664 hse
1856 htot 2160 vdisp 1200 vss 1201 vse 1204 vtot 1250 type 0x40 flags 0x5
                id 105:"1680x1050" freq 60 clock 146250 hdisp 1680 hss 1784 hse
1960 htot 2240 vdisp 1050 vss 1053 vse 1059 vtot 1089 type 0x40 flags 0x6
                id 106:"1400x1050" freq 60 clock 121750 hdisp 1400 hss 1488 hse
1632 htot 1864 vdisp 1050 vss 1053 vse 1057 vtot 1089 type 0x40 flags 0x6
                id 111:"1600x900" freq 60 clock 108000 hdisp 1600 hss 1624 hse
1704 htot 1800 vdisp 900 vss 901 vse 904 vtot 1000 type 0x40 flags 0x5
                id 102:"1280x1024" freq 60 clock 108000 hdisp 1280 hss 1328 hse
1440 htot 1688 vdisp 1024 vss 1025 vse 1028 vtot 1066 type 0x40 flags 0x5
                id 109:"1440x900" freq 60 clock 106500 hdisp 1440 hss 1520 hse
1672 htot 1904 vdisp 900 vss 903 vse 909 vtot 934 type 0x40 flags 0x6
                id 100:"1280x960" freq 60 clock 108000 hdisp 1280 hss 1376 hse
1488 htot 1800 vdisp 960 vss 961 vse 964 vtot 1000 type 0x40 flags 0x5
                id 99:"1366x768" freq 60 clock 85500 hdisp 1366 hss 1436 hse
1579 htot 1792 vdisp 768 vss 771 vse 774 vtot 798 type 0x40 flags 0x5
                id 101:"1280x720" freq 60 clock 74250 hdisp 1280 hss 1390 hse
1430 htot 1650 vdisp 720 vss 725 vse 730 vtot 750 type 0x40 flags 0x5
                id 107:"800x600" freq 60 clock 40000 hdisp 800 hss 840 hse 968
htot 1056 vdisp 600 vss 601 vse 605 vtot 628 type 0x40 flags 0x5
                id 108:"640x480" freq 60 clock 25175 hdisp 640 hss 656 hse 752
htot 800 vdisp 480 vss 490 vse 492 vtot 525 type 0x40 flags 0xa

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