Yan Seiner <yan@xxxxxxxxxx> wrote: >I'm resurrecting an older thread. I have a Hauppage USB Live2 >connected >to a MIPS box running openWRT. I tried this earlier on a older >hardware >running the 3.0.3 kernel. This is with newer hardware running >2.6.39.4. The driver attempts to allocate 800MB (!!!) of memory for >the >buffer and fails with a kernel crash. I'm not including any kernel >crash stuff as it has all the symbols stripped. > >This seems to be the key message: > >[ 514.770000] unable to allocate 805398992 bytes for transfer buffer 0 > >What can I do to narrow down the allocation problem? > >system type : Atheros AR9132 rev 2 >machine : Buffalo WZR-HP-G300NH >processor : 0 >cpu model : MIPS 24Kc V7.4 >BogoMIPS : 265.42 > >Bus 001 Device 005: ID 2040:c200 Hauppauge > >[ 34.560000] cx231xx v4l2 driver loaded. >[ 34.570000] cx231xx #0: New device Hauppauge Hauppauge Device @ 480 >Mbps (2040:c200) with 5 interfaces >[ 34.580000] cx231xx #0: registering interface 1 >[ 34.580000] cx231xx #0: bad senario!!!!! >[ 34.590000] cx231xx #0: config_info=0 >[ 34.590000] cx231xx #0: can't change interface 1 alt no. to 3: Max. >Pkt size = 0 >[ 34.600000] usb 1-1.2: selecting invalid altsetting 3 >[ 34.600000] cx231xx #0: can't change interface 1 alt no. to 3 >(err=-22) >[ 34.610000] cx231xx #0: can't change interface 1 alt no. to 1: Max. >Pkt size = 0 >[ 34.620000] usb 1-1.2: selecting invalid altsetting 1 >[ 34.620000] cx231xx #0: can't change interface 1 alt no. to 1 >(err=-22) >[ 34.630000] cx231xx #0: Identified as Hauppauge USB Live 2 (card=9) >[ 34.740000] cx231xx #0: cx231xx_dif_set_standard: setStandard to >ffffffff >[ 34.760000] cx231xx #0: Changing the i2c master port to 3 >[ 34.760000] cx25840 0-0044: cx23102 A/V decoder found @ 0x88 >(cx231xx #0) >[ 34.790000] cx25840 0-0044: Firmware download size changed to 16 >bytes max length >[ 36.770000] cx25840 0-0044: loaded v4l-cx231xx-avcore-01.fw firmware > >(16382 bytes) >[ 36.810000] cx231xx #0: cx231xx #0: v4l2 driver version 0.0.1 >[ 36.840000] cx231xx #0: cx231xx_dif_set_standard: setStandard to >ffffffff >[ 36.890000] cx231xx #0: video_mux : 0 >[ 36.900000] cx231xx #0: do_mode_ctrl_overrides : 0xb000 >[ 36.900000] cx231xx #0: do_mode_ctrl_overrides NTSC >[ 36.910000] cx231xx #0: cx231xx #0/0: registered device video0 >[v4l2] >[ 36.920000] cx231xx #0: cx231xx #0/0: registered device vbi0 >[ 36.930000] cx231xx #0: V4L2 device registered as video0 and vbi0 >[ 36.930000] cx231xx #0: EndPoint Addr 0x8f00, Alternate settings: 1 >[ 36.940000] cx231xx #0: Alternate setting 0, max size= 8 >[ 36.940000] cx231xx #0: EndPoint Addr 0x8f00, Alternate settings: 1 >[ 36.950000] cx231xx #0: Alternate setting 0, max size= 8 >[ 36.960000] cx231xx #0: EndPoint Addr 0x8f00, Alternate settings: 1 >[ 36.960000] cx231xx #0: Alternate setting 0, max size= 8 >[ 36.970000] cx231xx #0: EndPoint Addr 0x8f00, Alternate settings: 1 >[ 36.970000] cx231xx #0: Alternate setting 0, max size= 8 >[ 36.980000] usbcore: registered new interface driver cx231xx >[ 37.230000] ar71xx-wdt: enabling watchdog timer > > >root@rtmovies:/www/tmp/root/etc# fswebcam -r 320x240 >--- Opening /dev/video0... >Trying source module v4l2... >/dev/video0 opened. >No input was specified, using the first. >VIDIOC_QBUF: Cannot allocate memory >Unable to use mmap. Using read instead. >--- Capturing frame... >VIDIOC_DQBUF: Invalid argument >No frames captured. > > > >-- >Few people are capable of expressing with equanimity opinions which >differ from the prejudices of their social environment. Most people are >even incapable of forming such opinions. > Albert Einstein > >-- >To unsubscribe from this list: send the line "unsubscribe linux-media" >in >the body of a message to majordomo@xxxxxxxxxxxxxxx >More majordomo info at http://vger.kernel.org/majordomo-info.html 800 MB for 320x420 frames? It sounds like your app has gooned its requested buffer size. <wild speculation> This might be due to endianess differences between MIPS abd x86 and your app only being written and tested on x86. </wild speculation> You still appear to USB stack problems, but not as severe (can't change device config to some bogus config). Regards, Andy -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
