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? Best regards, Peter ________________________________ From: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> To: Matthew Dharm <mdharm-usb@xxxxxxxxxxxxxxxxxx> Cc: Peter Rasmussen <peterleifrasmussen@xxxxxxxxx>; linux-usb@xxxxxxxxxxxxxxx Sent: Mon, June 27, 2011 6:12:20 PM Subject: Re: USB with SDHC card not recognized in 2.6.39 and 3.0rc4 On Mon, 27 Jun 2011, Matthew Dharm wrote: > On Sun, Jun 26, 2011 at 03:52:56PM -0700, Peter Rasmussen wrote: > > The latest kernel I'm able to use a number of my USB-SD adapters is 2.6.38, >and > > > as 3.0 (now rc4) doesn't seem to get it right either I'm writing you. 2.6.39 > > didn't work either. > > > > I collected info in two files, one for 2.6.38 and one for 3.0rc4, and I hope >it > > > can be helpful. > > The 2.6.38 file shows some adapters working and some not, which is an issue I > > > > would like to chase later, but for now I would be happy with just one of them > > > > working (like before in 2.6.38). > > > > All tests are carried out with the same 8GB SDHC flash card inserted into the > > > > adapters. > > I took a quick look at these logs... to me, these look like some change in > the SCSI layer mode-sense handling. Anyone have any ideas what changed? It might be helpful to have a usbmon trace, so we can see what data the SCSI layer is getting. Peter, can you follow the instructions in Documentation/usb/usbmon.txt? Alan Stern
Attachment:
3.0.rc4.usb.1.mon.out
Description: Binary data
