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当错误发生时，dmesg信息如下：
pi@raspberrypi:~$ dmesg
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 3.10.25+ (dc4@dc4-arm-01) (gcc version 4.7.2 20120731 (prerelease) (crosstool-NG linaro-1.13.1+bzr2458 - Linaro GCC 2012.0 ) #622 PREEMPT Fri Jan 3 18:41:00 GMT 2014
[ 0.000000] CPU: ARMv6-compatible processor [410fb767] revision 7 (ARMv7), cr=00c5387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
[ 0.000000] Machine: BCM2708
[ 0.000000] cma: CMA: reserved 16 MiB at 17000000
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] On node 0 totalpages: 98304
[ 0.000000] free_area_init_node: node 0, pgdat c05cfd6c, node_mem_map c067d000
[ 0.000000] Normal zone: 768 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 98304 pages, LIFO batch:31
[ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[ 0.000000] pcpu-alloc: [0] 0
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 97536
[ 0.000000] Kernel command line: dma.dmachans=0x7f35 bcm2708_fb.fbwidth=1184 bcm2708_fb.fbheight=624 bcm2708.boardrev=0xd bcm2708.serial=0x145663df smsc95xx.macaddr=B8:27:EB:56:63 F sdhci-bcm2708.emmc_clock_freq=250000000 vc_mem.mem_base=0x1ec00000 vc_mem.mem_size=0x20000000 dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Memory: 384MB = 384MB total
[ 0.000000] Memory: 366628k/366628k available, 26588k reserved, 0K highmem
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
[ 0.000000] vmalloc : 0xd8800000 - 0xff000000 ( 616 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xd8000000 ( 384 MB)
[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
[ 0.000000] .text : 0xc0008000 - 0xc05727b4 (5546 kB)
[ 0.000000] .init : 0xc0573000 - 0xc0597424 ( 146 kB)
[ 0.000000] .data : 0xc0598000 - 0xc05d0870 ( 227 kB)
[ 0.000000] .bss : 0xc05d0870 - 0xc067c3e0 ( 687 kB)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] NR_IRQS:330
[ 0.000000] sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every 4294967ms
[ 0.000000] Switching to timer-based delay loop
[ 0.000000] Console: colour dummy device 80x30
[ 0.000000] console [tty1] enabled
[ 0.001180] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.00 BogoMIPS (lpj=10000)
[ 0.001247] pid_max: default: 32768 minimum: 301
[ 0.001721] Mount-cache hash table entries: 512
[ 0.002533] Initializing cgroup subsys memory
[ 0.002640] Initializing cgroup subsys devices
[ 0.002681] Initializing cgroup subsys freezer
[ 0.002717] Initializing cgroup subsys blkio
[ 0.002879] CPU: Testing write buffer coherency: ok
[ 0.003354] Setting up static identity map for 0xc0406048 - 0xc04060a4
[ 0.005185] devtmpfs: initialized
[ 0.019643] NET: Registered protocol family 16
[ 0.025588] DMA: preallocated 4096 KiB pool for atomic coherent allocations
[ 0.026706] bcm2708.uart_clock = 0
[ 0.028437] hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.
[ 0.028493] hw-breakpoint: maximum watchpoint size is 4 bytes.
[ 0.028532] mailbox: Broadcom VideoCore Mailbox driver
[ 0.028631] bcm2708_vcio: mailbox at f200b880
[ 0.028740] bcm_power: Broadcom power driver
[ 0.028781] bcm_power_open() -> 0
[ 0.028810] bcm_power_request(0,
[ 0.529533] bcm_mailbox_read -> 00000080, 0
[ 0.529580] bcm_power_request -> 0
[ 0.529807] Serial: AMBA PL011 UART driver
[ 0.529974] dev:f1: ttyAMA0 at MMIO 0x20201000 (irq = 83) is a PL011 rev3
[ 0.872111] console [ttyAMA0] enabled
[ 0.898085] bio: create slab <bio-0> at 0
[ 0.903430] SCSI subsystem initialized
[ 0.907410] usbcore: registered new interface driver usbfs
[ 0.913133] usbcore: registered new interface driver hub
[ 0.918714] usbcore: registered new device driver usb
[ 0.925315] Switching to clocksource stc
[ 0.929662] FS-Cache: Loaded
[ 0.932837] CacheFiles: Loaded
[ 0.948635] NET: Registered protocol family 2
[ 0.954052] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.961320] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.967848] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.974325] TCP: reno registered
[ 0.977588] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.983500] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.990245] NET: Registered protocol family 1
[ 0.995184] RPC: Registered named UNIX socket transport module.
[ 1.001255] RPC: Registered udp transport module.
[ 1.005985] RPC: Registered tcp transport module.
[ 1.010739] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 1.018092] bcm2708_dma: DMA manager at f2007000
[ 1.022915] bcm2708_gpio: bcm2708_gpio_probe c05a5e50
[ 1.028370] vc-mem: phys_addr:0x00000000 mem_base=0x1ec00000 mem_size:0x20000000(512 MiB)
[ 1.037760] audit: initializing netlink socket (disabled)
[ 1.043440] type=2000 audit(0.890:1): initialized
[ 1.205251] VFS: Disk quotas dquot_6.5.2
[ 1.209650] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 1.218496] FS-Cache: Netfs 'nfs' registered for caching
[ 1.225240] NFS: Registering the id_resolver key type
[ 1.230563] Key type id_resolver registered
[ 1.234774] Key type id_legacy registered
[ 1.239603] msgmni has been set to 748
[ 1.245470] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
[ 1.253325] io scheduler noop registered
[ 1.257288] io scheduler deadline registered (default)
[ 1.262879] io scheduler cfq registered
[ 1.267024] bcm2708_fb_debugfs_init: could not create debugfs entry
[ 1.274607] BCM2708FB: allocated DMA memory 57400000
[ 1.279770] BCM2708FB: allocated DMA channel 0 @ f2007000
[ 1.296488] Console: switching to colour frame buffer device 148x39
[ 1.308888] uart-pl011 dev:f1: no DMA platform data
[ 1.314021] kgdb: Registered I/O driver kgdboc.
[ 1.319382] vc-cma: Videocore CMA driver
[ 1.323401] vc-cma: vc_cma_base = 0x00000000
[ 1.330544] vc-cma: vc_cma_size = 0x00000000 (0 MiB)
[ 1.338242] vc-cma: vc_cma_initial = 0x00000000 (0 MiB)
[ 1.355423] brd: module loaded
[ 1.366195] loop: module loaded
[ 1.372035] vchiq: vchiq_init_state: slot_zero = 0xd7000000, is_master = 0
[ 1.382214] Loading iSCSI transport class v2.0-870.
[ 1.390865] usbcore: registered new interface driver smsc95xx
[ 1.399292] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[ 1.607604] Core Release: 2.80a
[ 1.613186] Setting default values for core params
[ 1.620356] Finished setting default values for core params
[ 1.828287] Using Buffer DMA mode
[ 1.833937] Periodic Transfer Interrupt Enhancement - disabled
[ 1.842083] Multiprocessor Interrupt Enhancement - disabled
[ 1.849980] OTG VER PARAM: 0, OTG VER FLAG: 0
[ 1.856597] Dedicated Tx FIFOs mode
[ 1.862884] dwc_otg: Microframe scheduler enabled
[ 1.863133] dwc_otg bcm2708_usb: DWC OTG Controller
[ 1.870434] dwc_otg bcm2708_usb: new USB bus registered, assigned bus number 1
[ 1.880101] dwc_otg bcm2708_usb: irq 32, io mem 0x00000000
[ 1.887917] Init: Port Power? op_state=1
[ 1.894120] Init: Power Port (0)
[ 1.899747] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.908810] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.918325] usb usb1: Product: DWC OTG Controller
[ 1.925323] usb usb1: Manufacturer: Linux 3.10.25+ dwc_otg_hcd
[ 1.933472] usb usb1: SerialNumber: bcm2708_usb
[ 1.941088] hub 1-0:1.0: USB hub found
[ 1.947131] hub 1-0:1.0: 1 port detected
[ 1.953725] dwc_otg: FIQ enabled
[ 1.953746] dwc_otg: NAK holdoff enabled
[ 1.953757] dwc_otg: FIQ split fix enabled
[ 1.953778] Module dwc_common_port init
[ 1.954230] usbcore: registered new interface driver usb-storage
[ 1.962998] mousedev: PS/2 mouse device common for all mice
[ 1.971611] bcm2835-cpufreq: min=700000 max=800000 cur=700000
[ 1.979848] bcm2835-cpufreq: switching to governor powersave
[ 1.987785] bcm2835-cpufreq: switching to governor powersave
[ 1.995676] cpuidle: using governor ladder
[ 2.002066] cpuidle: using governor menu
[ 2.008281] sdhci: Secure Digital Host Controller Interface driver
[ 2.016749] sdhci: Copyright(c) Pierre Ossman
[ 2.023496] sdhci: Enable low-latency mode
[ 2.069368] mmc0: SDHCI controller on BCM2708_Arasan [platform] using platform's DMA
[ 2.079837] mmc0: BCM2708 SDHC host at 0x20300000 DMA 2 IRQ 77
[ 2.088072] sdhci-pltfm: SDHCI platform and OF driver helper
[ 2.096193] ledtrig-cpu: registered to indicate activity on CPUs
[ 2.106782] hidraw: raw HID events driver (C) Jiri Kosina
[ 2.122082] usbcore: registered new interface driver usbhid
[ 2.130091] usbhid: USB HID core driver
[ 2.140916] TCP: cubic registered
[ 2.148591] Initializing XFRM netlink socket
[ 2.157317] Indeed it is in host mode hprt0 = 00021501
[ 2.164844] NET: Registered protocol family 17
[ 2.182611] Key type dns_resolver registered
[ 2.199783] VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5
[ 2.216950] registered taskstats version 1
[ 2.227071] mmc0: new high speed SDHC card at address 1234
[ 2.250401] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[ 2.259454] mmcblk0: mmc0:1234 SA08G 7.42 GiB
[ 2.269204] mmcblk0: p1 p2
[ 2.409382] usb 1-1: new high-speed USB device number 2 using dwc_otg
[ 2.418449] Indeed it is in host mode hprt0 = 00001101
[ 2.620109] usb 1-1: New USB device found, idVendor=0424, idProduct=9512
[ 2.629366] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 2.639921] hub 1-1:1.0: USB hub found
[ 2.646345] hub 1-1:1.0: 3 ports detected
[ 2.929608] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[ 3.050037] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[ 3.059474] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 3.072269] smsc95xx v1.0.4
[ 3.268020] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:56:63:df
[ 3.359547] usb 1-1.3: new high-speed USB device number 4 using dwc_otg
[ 3.369996] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.381325] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 3.392034] devtmpfs: mounted
[ 3.398280] Freeing unused kernel memory: 144K (c0573000 - c0597000)
[ 3.483600] usb 1-1.3: New USB device found, idVendor=18ec, idProduct=3399
[ 3.494342] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 3.504570] usb 1-1.3: Product: USB2.0 PC CAMERA
[ 3.512179] usb 1-1.3: Manufacturer: ARKMICRO
[ 5.110498] udevd[156]: starting version 175
[ 6.644577] media: Linux media interface: v0.10
[ 6.766484] Linux video capture interface: v2.00
[ 7.319635] uvcvideo: Found UVC 1.00 device USB2.0 PC CAMERA (18ec:3399)
[ 7.520087] uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround.
[ 7.591742] input: USB2.0 PC CAMERA as /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3:1.0/input/input0
[ 7.683325] usbcore: registered new interface driver uvcvideo
[ 7.729101] USB Video Class driver (1.1.1)
[ 9.679965] bcm2708-i2s bcm2708-i2s.0: Failed to create debugfs directory
[ 9.866447] 4:3:1: cannot get freq at ep 0x82
[ 9.898948] usb_audio: Warning! Unlikely big volume range (=11903), cval->res is probably wrong.
[ 9.921244] usb_audio: [2] FU [Mic Capture Volume] ch = 2, val = 384/12287/1<6>[ 9.972114] usbcore: registered new interface driver snd-usb-audio
[ 18.565165] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 20.611166] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 28.862689] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 32.406250] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[ 33.971192] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
[ 38.980357] Adding 102396k swap on /var/swap. Priority:-1 extents:1 across:102396k SSFS
[ 330.431775] irq 32: nobody cared (try booting with the "irqpoll" option)
[ 330.431819] CPU: 0 PID: 2244 Comm: fswebcam Not tainted 3.10.25+ #622
[ 330.431895] [<c0013a18>] (unwind_backtrace+0x0/0xf0) from [<c0010d7c>] (show_stack+0x10/0x14)
[ 330.431947] [<c0010d7c>] (show_stack+0x10/0x14) from [<c007dc24>] (__report_bad_irq+0x20/0xe4)
[ 330.431982] [<c007dc24>] (__report_bad_irq+0x20/0xe4) from [<c007e0d8>] (note_interrupt+0x1c4/0x224)
[ 330.432016] [<c007e0d8>] (note_interrupt+0x1c4/0x224) from [<c007c3ac>] (handle_irq_event_percpu+0xac/0x1b0)
[ 330.432047] [<c007c3ac>] (handle_irq_event_percpu+0xac/0x1b0) from [<c007c504>] (handle_irq_event+0x54/0x84)
[ 330.432079] [<c007c504>] (handle_irq_event+0x54/0x84) from [<c007e8e4>] (handle_level_irq+0x98/0x10
[ 330.432112] [<c007e8e4>] (handle_level_irq+0x98/0x10 from [<c007bc48>] (generic_handle_irq+0x28/0x40)
[ 330.432146] [<c007bc48>] (generic_handle_irq+0x28/0x40) from [<c000e9ac>] (handle_IRQ+0x30/0x84)
[ 330.432193] [<c000e9ac>] (handle_IRQ+0x30/0x84) from [<c0402654>] (__irq_svc+0x34/0xc
[ 330.432243] [<c0402654>] (__irq_svc+0x34/0xc from [<c00259f0>] (__do_softirq+0x6c/0x19c)
[ 330.432279] [<c00259f0>] (__do_softirq+0x6c/0x19c) from [<c0025bb4>] (do_softirq+0x48/0x54)
[ 330.432311] [<c0025bb4>] (do_softirq+0x48/0x54) from [<c0025e24>] (irq_exit+0x8c/0xc
[ 330.432344] [<c0025e24>] (irq_exit+0x8c/0xc from [<c000e9b0>] (handle_IRQ+0x34/0x84)
[ 330.432378] [<c000e9b0>] (handle_IRQ+0x34/0x84) from [<c0402898>] (__irq_usr+0x38/0xc0)
[ 330.432392] handlers:
[ 330.432428] [<c02cff0c>] dwc_otg_common_irq
[ 330.432451] [<c02dc6f0>] dwc_otg_pcd_irq
[ 330.432485] [<c02c0ef0>] usb_hcd_irq
[ 330.432497] Disabling IRQ #32
[ 330.438480] hub 1-0:1.0: port 1 disabled by hub (EMI?), re-enabling...
[ 330.438523] usb 1-1: USB disconnect, device number 2
[ 330.438545] usb 1-1.1: USB disconnect, device number 3
[ 330.438876] smsc95xx 1-1.1:1.0 eth0: unregister 'smsc95xx' usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet
[ 335.429463] smsc95xx 1-1.1:1.0 eth0: Failed to read reg index 0x00000114: -110
[ 335.429495] smsc95xx 1-1.1:1.0 eth0: Error reading MII_ACCESS
[ 335.429515] smsc95xx 1-1.1:1.0 eth0: MII is busy in smsc95xx_mdio_read
[ 335.429548] smsc95xx 1-1.1:1.0 eth0: Failed to read reg index 0x00000114: -19
[ 335.429565] smsc95xx 1-1.1:1.0 eth0: Error reading MII_ACCESS
[ 335.429583] smsc95xx 1-1.1:1.0 eth0: MII is busy in smsc95xx_mdio_read
[ 335.429725] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[ 335.470311] usb 1-1.3: USB disconnect, device number 4
[ 335.629681] Indeed it is in host mode hprt0 = 00001501
[ 335.869510] usb 1-1: new high-speed USB device number 5 using dwc_otg
[ 336.229499] Indeed it is in host mode hprt0 = 00001101
[ 337.829548] usb 1-1: New USB device found, idVendor=0424, idProduct=9512
[ 337.829582] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 338.129790] hub 1-1:1.0: USB hub found
[ 338.529504] hub 1-1:1.0: 3 ports detected
[ 343.929455] usb 1-1.1: new high-speed USB device number 6 using dwc_otg
[ 346.829517] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[ 346.829553] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 347.129836] smsc95xx v1.0.4
[ 372.429773] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:56:63:df
[ 373.829814] usb 1-1.3: new high-speed USB device number 7 using dwc_otg
[ 377.629586] usb 1-1.3: New USB device found, idVendor=18ec, idProduct=3399
[ 377.629623] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 377.629645] usb 1-1.3: Product: USB2.0 PC CAMERA
[ 377.629662] usb 1-1.3: Manufacturer: ARKMICRO
[ 377.829992] uvcvideo: Found UVC 1.00 device USB2.0 PC CAMERA (18ec:3399)
[ 378.429486] uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround.
[ 378.830333] input: USB2.0 PC CAMERA as /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3:1.0/input/input1
[ 380.929466] 7:3:1: cannot get freq at ep 0x82
[ 394.029541] usb_audio: Warning! Unlikely big volume range (=11903), cval->res is probably wrong.
[ 394.029578] usb_audio: [2] FU [Mic Capture Volume] ch = 2, val = 384/12287/1<6>[ 397.529517] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[ 398.129454] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 398.229573] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 398.429503] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 398.629565] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 398.829620] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 398.929494] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 399.129469] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 399.229643] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 399.429575] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 399.629595] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 403.229562] net_ratelimit: 17 callbacks suppressed
[ 403.229605] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 403.429543] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 403.629622] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 403.829576] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 404.029561] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 413.229549] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
[ 436.529540] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
[ 447.969402] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -110 (exp. 2).
[ 448.269422] uvcvideo: Failed to query (GET_DEF) UVC control 3 on unit 2: -110 (exp. 2).
[ 448.429520] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 448.569413] uvcvideo: Failed to query (GET_DEF) UVC control 7 on unit 2: -110 (exp. 2).
[ 448.869405] uvcvideo: Failed to query (GET_DEF) UVC control 6 on unit 2: -110 (exp. 2).
[ 449.129498] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 449.169404] uvcvideo: Failed to query (GET_DEF) UVC control 9 on unit 2: -110 (exp. 2).
[ 449.469400] uvcvideo: Failed to query (GET_DEF) UVC control 4 on unit 2: -110 (exp. 2).
[ 449.769408] uvcvideo: Failed to query (GET_DEF) UVC control 5 on unit 2: -110 (exp. 1).
[ 450.069410] uvcvideo: Failed to query (GET_DEF) UVC control 8 on unit 2: -110 (exp. 2).
[ 455.429545] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 455.629589] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 463.329532] smsc95xx 1-1.1:1.0 eth0: link down
[ 471.466913] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[ 498.729490] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[ 509.029572] uvcvideo: Failed to query (GET_MIN) UVC control 2 on unit 2: -110 (exp. 2).
[ 509.329540] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 509.330054] uvcvideo: Failed to query (GET_DEF) UVC control 3 on unit 2: -110 (exp. 2).
[ 509.629560] uvcvideo: Failed to query (GET_DEF) UVC control 7 on unit 2: -110 (exp. 2).
[ 509.929515] uvcvideo: Failed to query (GET_DEF) UVC control 6 on unit 2: -110 (exp. 2).
[ 510.229640] uvcvideo: Failed to query (GET_DEF) UVC control 9 on unit 2: -110 (exp. 2).
[ 510.529547] uvcvideo: Failed to query (GET_DEF) UVC control 4 on unit 2: -110 (exp. 2).
[ 511.129537] uvcvideo: Failed to query (GET_DEF) UVC control 8 on unit 2: -110 (exp. 2).
[ 559.129459] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 559.329460] smsc95xx 1-1.1:1.0 eth0: kevent 4 may have been dropped
[ 568.429608] uvcvideo: Failed to query (GET_MIN) UVC control 2 on unit 2: -110 (exp. 2).
[ 568.729502] uvcvideo: Failed to query (GET_DEF) UVC control 3 on unit 2: -110 (exp. 2).
[ 569.029645] uvcvideo: Failed to query (GET_DEF) UVC control 7 on unit 2: -110 (exp. 2).
[ 569.329634] uvcvideo: Failed to query (GET_DEF) UVC control 6 on unit 2: -110 (exp. 2).
[ 569.629582] uvcvideo: Failed to query (GET_DEF) UVC control 9 on unit 2: -110 (exp. 2).
[ 569.929547] uvcvideo: Failed to query (GET_DEF) UVC control 4 on unit 2: -110 (exp. 2).
[ 570.229516] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 570.229623] uvcvideo: Failed to query (GET_DEF) UVC control 8 on unit 2: -110 (exp. 2).
[ 570.929548] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
[ 595.929516] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
[ 628.589416] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -110 (exp. 2).
[ 628.829590] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 628.889401] uvcvideo: Failed to query (GET_DEF) UVC control 3 on unit 2: -110 (exp. 2).
[ 629.189391] uvcvideo: Failed to query (GET_DEF) UVC control 7 on unit 2: -110 (exp. 2).
[ 629.429561] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 629.489420] uvcvideo: Failed to query (GET_DEF) UVC control 6 on unit 2: -110 (exp. 2).
[ 629.729477] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 629.789403] uvcvideo: Failed to query (GET_DEF) UVC control 9 on unit 2: -110 (exp. 2).
[ 630.029510] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 630.089403] uvcvideo: Failed to query (GET_DEF) UVC control 4 on unit 2: -110 (exp. 2).
[ 630.329504] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 630.629736] uvcvideo: Failed to query (GET_MIN) UVC control 8 on unit 2: -110 (exp. 2).
[ 670.529501] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 673.479421] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -110 (exp. 2).
[ 673.779410] uvcvideo: Failed to query (GET_DEF) UVC control 3 on unit 2: -110 (exp. 2).
[ 674.079414] uvcvideo: Failed to query (GET_DEF) UVC control 7 on unit 2: -110 (exp. 2).
[ 674.629562] uvcvideo: Failed to query (GET_MIN) UVC control 6 on unit 2: -110 (exp. 2).
[ 674.929524] uvcvideo: Failed to query (GET_DEF) UVC control 9 on unit 2: -110 (exp. 2).
[ 675.229836] uvcvideo: Failed to query (GET_DEF) UVC control 4 on unit 2: -110 (exp. 2).
[ 675.529640] uvcvideo: Failed to query (GET_DEF) UVC control 8 on unit 2: -110 (exp. 2).
[ 748.659392] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 2: -110 (exp. 2).
[ 748.929456] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 748.959432] uvcvideo: Failed to query (GET_DEF) UVC control 3 on unit 2: -110 (exp. 2).
[ 749.259408] uvcvideo: Failed to query (GET_DEF) UVC control 7 on unit 2: -110 (exp. 2).
[ 749.559401] uvcvideo: Failed to query (GET_DEF) UVC control 6 on unit 2: -110 (exp. 2).
[ 749.859406] uvcvideo: Failed to query (GET_DEF) UVC control 9 on unit 2: -110 (exp. 2).
[ 750.159424] uvcvideo: Failed to query (GET_DEF) UVC control 4 on unit 2: -110 (exp. 2).
[ 750.459398] uvcvideo: Failed to query (GET_DEF) UVC control 8 on unit 2: -110 (exp. 2).
[ 790.229597] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 808.329560] uvcvideo: Failed to query (GET_MIN) UVC control 2 on unit 2: -110 (exp. 2).
[ 808.629577] uvcvideo: Failed to query (GET_DEF) UVC control 3 on unit 2: -110 (exp. 2).
[ 808.929607] uvcvideo: Failed to query (GET_DEF) UVC control 7 on unit 2: -110 (exp. 2).
[ 809.229771] uvcvideo: Failed to query (GET_DEF) UVC control 6 on unit 2: -110 (exp. 2).
[ 809.529577] uvcvideo: Failed to query (GET_DEF) UVC control 9 on unit 2: -110 (exp. 2).
[ 809.829590] uvcvideo: Failed to query (GET_DEF) UVC control 4 on unit 2: -110 (exp. 2).
[ 810.129561] smsc95xx 1-1.1:1.0 eth0: unexpected urb length 0
[ 810.129762] uvcvideo: Failed to query (GET_DEF) UVC control 8 on unit 2: -110 (exp. 2).
pi@raspberrypi:~$
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发表于 2014-05-08 22:26
