On Tue, 29 May 2012, Guan wrote: > Alan Stern <stern@...> writes: > > > > > On Sun, 27 May 2012, Guan wrote: > > > > Where was the original bug report posted? > > No idea ... > > > > > What does the dmesg log say if CONFIG_USB_DEBUG is enabled? > > Much similar as the OP's. How do you know your log is similar to the OP's? How can you even have seen the OP's log if you don't know where the original bug report was posted? > On startup when I modprobe usb-ohci it works; on > re-connect there comes this message: > > ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Drive > ep93xx-ohci ep93xx-ohci: EP93xx OHCI > ep93xx-ohci ep93xx-ohci: new USB bus registered, assi > ep93xx-ohci ep93xx-ohci: irq 56, io mem 0x80020000 > usb usb1: New USB device found, idVendor=1d6b, idProd > usb usb1: New USB device strings: Mfr=3, Product=2, S > usb usb1: Product: EP93xx OHCI > usb usb1: Manufacturer: Linux 3.4.0 ohci_hcd > usb usb1: SerialNumber: ep93xx > hub 1-0:1.0: USB hub found > hub 1-0:1.0: 3 ports detected > usb 1-1: new full-speed USB device number 2 using ep9 > usb 1-1: New USB device found, idVendor=16c0, idProdu > usb 1-1: New USB device strings: Mfr=0, Product=0, Se > usb 1-3: new full-speed USB device number 3 using ep9 > usb 1-3: New USB device found, idVendor=0a12, idProdu > usb 1-3: New USB device strings: Mfr=0, Product=0, Se > usb 1-1: USB disconnect, device number 2 > usb 1-1: new full-speed USB device number 4 using ep9 > usb 1-1: New USB device found, idVendor=16c0, idProdu > usb 1-1: New USB device strings: Mfr=1, Product=2, Se > usb 1-1: Product: QHY5-CMOS > usb 1-1: Manufacturer: QHY_CAMS > NET: Registered protocol family 10 That's the part where it worked during startup? > Please press Enter to activate this console. usb 1-1: > usb 1-1: new full-speed USB device number 5 using ep9 > usb 1-1: no configurations > usb 1-1: can't read configurations, error -22 > usb 1-1: new full-speed USB device number 6 using ep9 > usb 1-1: no configurations > usb 1-1: can't read configurations, error -22 And that's the part where it failed later on? Can you collect a usbmon trace showing what happens when you plug the device in and it fails? Alan Stern P.S.: Please don't truncate your logs after column 53. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
