On Sat, 29 Sep 2007, Stefan Richter wrote: > Hi list, > > I've got the mentioned MP3 player with 4GB built-in flash memory and an > SD/SDHC card slot. The player worked under Linux with the shipped > firmware, but in order to make its card slot SDHC compatible I installed > their current firmware v2.50. The USB mass storage driver of that > firmware still seems to work on Windows (shows built-in flash and card > slot as two separate drive letters), became a bit quirkier on OS X (is > shown as invalid volume upon connection, is then quickly recognized as > it should and can be accessed, immediately reinserts itself when it was > "ejected"), but hardly works under Linux. > > With card slot empty: ... > sd 71:0:0:0: [sdd] 1 512-byte hardware sectors (0 MB) ... > Can't do much with that.
Indeed. Without a card in the slot you can't do much with it, no matter what shows up in the log. (It might be worth mentioning that the firmware's behavior in this case was not correct. It should have returned an error code indicating no card was present, instead of pretending there was a 0-MB card.) > With an 8GB SDHC card inserted: > > usb 1-8: new high speed USB device using ehci_hcd and address 24 > usb 1-8: configuration #1 chosen from 1 choice > scsi72 : SCSI emulation for USB Mass Storage devices > usb-storage: device found at 24 > usb-storage: waiting for device to settle before scanning > scsi 72:0:0:0: Direct-Access COWON D2 0100 PQ: 0 > ANSI: 0 > sd 72:0:0:0: [sdd] 15728160 512-byte hardware sectors (8053 MB) > sd 72:0:0:0: [sdd] Write Protect is off > sd 72:0:0:0: [sdd] Mode Sense: 37 00 00 08 > sd 72:0:0:0: [sdd] Assuming drive cache: write through > sd 72:0:0:0: [sdd] 15728160 512-byte hardware sectors (8053 MB) > sd 72:0:0:0: [sdd] Write Protect is off > sd 72:0:0:0: [sdd] Mode Sense: 37 00 00 08 > sd 72:0:0:0: [sdd] Assuming drive cache: write through > sdd: sdd1 > sdd: p1 exceeds device capacity > sd 72:0:0:0: [sdd] Attached SCSI removable disk > sd 72:0:0:0: Attached scsi generic sg4 type 0 > usb-storage: device scan complete > attempt to access beyond end of device > sdd: rw=0, want=15758216, limit=15728160 > Buffer I/O error on device sdd1, logical block 1968752 > [repeated] > attempt to access beyond end of device > sdd: rw=0, want=15758280, limit=15728160 > [repeated] > > Then I can at least access the SDHC card. What makes you think there's a problem? Evidently the partition table is goofy, but you can easily repartition the card. It sure looks like everything is working correctly. > $ ls /sys/bus/usb/devices/1-8*/ > /sys/bus/usb/devices/1-8/: > 1-8:1.0 bNumConfigurations dev maxchild uevent > bConfigurationValue bNumInterfaces devnum power > usb_endpoint > bDeviceClass bcdDevice driver product version > bDeviceProtocol bmAttributes ep_00 quirks > bDeviceSubClass busnum idProduct serial > bMaxPacketSize0 configuration idVendor speed > bMaxPower descriptors manufacturer subsystem > > /sys/bus/usb/devices/1-8:1.0/: > bAlternateSetting bInterfaceProtocol driver ep_83 power > usb_endpoint > bInterfaceClass bInterfaceSubClass ep_02 host72 subsystem > bInterfaceNumber bNumEndpoints ep_81 modalias uevent There's not much point in these directory listings. The names of the files don't convey any useful information; what matters is their contents. > The initial successful tests with the old firmware and what you see > above is with Linux 2.6.23-rc6. > > Questions: > - Are there usb-storage or scsi-mod workarounds which are good > candidates to make it work? As far as I can see, it's working already. > - Is there a way to specify quirks to usb-storage at runtime? No. Alan Stern ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
