Sziasztok!

Egy érdekes problémával találtam szembe magamat, aminek nem bírok a végére érni. A tárgya egy USB-n keresztül elérhető nand...
A kis drága szépen működik egy darabig, lehet rá írni, lehet róla olvasni, majd egyszer csak eltűnik a rendszerből. A kernel logban pedig az alábbi üzeneteket találom:

Apr 28 18:21:43 kernel: ehci_hcd 0000:00:0f.5: port 3 high speed
Apr 28 18:21:43 kernel: ehci_hcd 0000:00:0f.5: GetStatus port 3 status 001005 POWER sig=se0 PE CONNECT
Apr 28 18:21:43 kernel: usb 1-3: reset high speed USB device using ehci_hcd and address 3
Apr 28 18:21:48 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:21:53 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:21:58 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:21:58 kernel: ehci_hcd 0000:00:0f.5: port 3 high speed
Apr 28 18:21:58 kernel: ehci_hcd 0000:00:0f.5: GetStatus port 3 status 001005 POWER sig=se0 PE CONNECT
Apr 28 18:21:58 kernel: usb 1-3: device descriptor read/64, error -110
Apr 28 18:22:04 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:22:09 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:22:14 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:22:14 kernel: ehci_hcd 0000:00:0f.5: port 3 high speed
Apr 28 18:22:14 kernel: ehci_hcd 0000:00:0f.5: GetStatus port 3 status 001005 POWER sig=se0 PE CONNECT
Apr 28 18:22:14 kernel: usb 1-3: device descriptor read/64, error -110
Apr 28 18:22:14 kernel: ehci_hcd 0000:00:0f.5: port 3 high speed
Apr 28 18:22:14 kernel: ehci_hcd 0000:00:0f.5: GetStatus port 3 status 001005 POWER sig=se0 PE CONNECT
Apr 28 18:22:14 kernel: usb 1-3: reset high speed USB device using ehci_hcd and address 3
Apr 28 18:22:19 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:22:24 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:22:29 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:22:29 kernel: ehci_hcd 0000:00:0f.5: port 3 high speed
Apr 28 18:22:29 kernel: ehci_hcd 0000:00:0f.5: GetStatus port 3 status 001005 POWER sig=se0 PE CONNECT
Apr 28 18:22:29 kernel: usb 1-3: device descriptor read/64, error -110
Apr 28 18:22:34 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:22:39 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:22:44 kernel: usb 1-3: usb-storage timed out on ep0in len=0/64
Apr 28 18:22:44 kernel: ehci_hcd 0000:00:0f.5: port 3 high speed
Apr 28 18:22:44 kernel: ehci_hcd 0000:00:0f.5: GetStatus port 3 status 001005 POWER sig=se0 PE CONNECT
Apr 28 18:22:44 kernel: usb 1-3: device descriptor read/64, error -110
Apr 28 18:22:44 kernel: ehci_hcd 0000:00:0f.5: port 3 high speed
Apr 28 18:22:44 kernel: ehci_hcd 0000:00:0f.5: GetStatus port 3 status 001005 POWER sig=se0 PE CONNECT
Apr 28 18:22:45 kernel: usb 1-3: reset high speed USB device using ehci_hcd and address 3
Apr 28 18:22:50 kernel: usb 1-3: usb-storage timed out on ep0out len=0/0
Apr 28 18:22:55 kernel: usb 1-3: usb-storage timed out on ep0out len=0/0
Apr 28 18:22:55 kernel: usb 1-3: device not accepting address 3, error -110
Apr 28 18:22:55 kernel: ehci_hcd 0000:00:0f.5: port 3 high speed
Apr 28 18:22:55 kernel: ehci_hcd 0000:00:0f.5: GetStatus port 3 status 001005 POWER sig=se0 PE CONNECT
Apr 28 18:22:55 kernel: usb 1-3: reset high speed USB device using ehci_hcd and address 3
Apr 28 18:23:00 kernel: usb 1-3: usb-storage timed out on ep0out len=0/0
Apr 28 18:23:05 kernel: usb 1-3: usb-storage timed out on ep0out len=0/0
Apr 28 18:23:06 kernel: usb 1-3: device not accepting address 3, error -110
Apr 28 18:23:06 kernel: hub 1-0:1.0: logical disconnect on port 3
Apr 28 18:23:06 kernel: hub 1-0:1.0: state 7 ports 4 chg 0008 evt 0000
Apr 28 18:23:06 kernel: hub 1-0:1.0: port 3, status 0501, change 0000, 480 Mb/s
Apr 28 18:23:06 kernel: usb 1-3: USB disconnect, address 3
Apr 28 18:23:06 kernel: sd 0:0:0:0: Device offlined - not ready after error recovery
Apr 28 18:23:06 kernel: usb 1-3: unregistering device
Apr 28 18:23:06 kernel: usb 1-3: usb_disable_device nuking all URBs
Apr 28 18:23:06 kernel: usb 1-3: unregistering interface 1-3:1.0
Apr 28 18:23:06 kernel: usb 1-3:1.0: uevent
Apr 28 18:23:06 kernel: usb 1-3: uevent
Apr 28 18:23:06 kernel: ehci_hcd 0000:00:0f.5: port 3 high speed
Apr 28 18:23:06 kernel: ehci_hcd 0000:00:0f.5: GetStatus port 3 status 001005 POWER sig=se0 PE CONNECT
Apr 28 18:23:06 kernel: usb 1-3: new high speed USB device using ehci_hcd and address 4
Apr 28 18:23:11 kernel: usb 1-3: khubd timed out on ep0in len=0/64
Apr 28 18:23:16 kernel: usb 1-3: khubd timed out on ep0in len=0/64
Apr 28 18:23:21 kernel: usb 1-3: khubd timed out on ep0in len=0/64
Apr 28 18:23:21 kernel: ehci_hcd 0000:00:0f.5: port 3 high speed
Apr 28 18:23:21 kernel: ehci_hcd 0000:00:0f.5: GetStatus port 3 status 001005 POWER sig=se0 PE CONNECT
Apr 28 18:23:21 kernel: usb 1-3: device descriptor read/64, error -110
Apr 28 18:23:26 kernel: usb 1-3: khubd timed out on ep0in len=0/64
Apr 28 18:23:31 kernel: usb 1-3: khubd timed out on ep0in len=0/64
Apr 28 18:23:36 kernel: usb 1-3: khubd timed out on ep0in len=0/64

és innentől ez a ciklus pörög még párszor, persze sikertelen eredménnyel.
Esetleg van valakinek valami ötlete, hogy mitől lehet, esetleg valaki találkozott már hasonló esettel?
A gyógyszer a nand visszahozására a reboot :(

# lsusb
Bus 002 Device 004: ID 0403:6010 Future Technology Devices International, Ltd FT2232C Dual USB-UART/FIFO IC
Bus 002 Device 002: ID 0451:2046 Texas Instruments, Inc. TUSB2046 Hub
Bus 002 Device 003: ID 0403:6010 Future Technology Devices International, Ltd FT2232C Dual USB-UART/FIFO IC
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 090c:1000 Feiya Technology Corp. Memory Bar
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Ami a gépen van: lenny és 2.6.29.1-rt7-es kernel.

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