On Mon, 27 Jun 2011, Peter Rasmussen wrote: > Following the directions in "Documentation/usb/usbmon.txt". > > On 3.0rc4 I now did: > # uname -r > 3.0.0-rc4-smp > # zcat /proc/config.gz|grep USB_MON > CONFIG_USB_MON=y > # mount -t debugfs none_debugs /sys/kernel/debug > # ls /sys/kernel/debug/usb/usbmon > 0s 0u 1s 1t 1u 2s 2t 2u 3s 3t 3u 4s 4t 4u 5s 5t 5u 6s 6t 6u > 7s 7t 7u > > Then, when performing: > # cat /proc/bus/usb/devices > > I found that the following part changed when inserting the USB adapter (from > Transcend) that works on 2.6.38 : > > T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 5 Spd=480 MxCh= 0 > D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > P: Vendor=058f ProdID=6335 Rev= 1.05 > S: Manufacturer=Generic > S: Product=Mass Storage Device > S: SerialNumber=058F63356336 > C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA > I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage > E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms > E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms > > Then doing the following while the USB adapter wasn't in: > > cat /sys/kernel/debug/usb/usbmon/1u > /tmp/3.0.rc4.usb.1.mon.out > > Inserting the adapter with the previously mentioned 8GB SDHC card, waiting a > minute or so and then removing it, I got the file that I have attached to this > email. > > I hope this helps, or please get back to me, eg. should I also do it with > 2.6.38? The usbmon trace looks perfectly okay. No errors as far as I can see. Let's try some additional debugging. Run each of the following commands under both 2.6.38 and 3.0-rc4 (with the Transcend adapter and SDHC card plugged in), and post the output: dd if=/dev/sda count=1 | hexdump -C fdisk -l /dev/sda dd if=/dev/sda1 count=1 | hexdump -C file -s /dev/sda1 Alan Stern -- 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
