Hi All, I'm testing g_mass_storage gadget using the cdrom emulation. It does not seem to work at all on Mac OSX and does have strange behaviour on Linux to. I tested on the following hosts: - Ubuntu Linux kernel 3.0.0-12-generic-pae - Mac OSX Snow Leopard - Windows 7 Starting g_mass_storage with following command on device (i.MX28 based hardware): modprobe g_mass_storage file=/test.iso cdrom=1 I'm using a cd iso with Microsoft Joliet extensions. Result: - On Linux: recognized, but not like expected (not auto mounted, see also below in comparison with usb portable cd player) - On Windows: recognized as expected - On Mac: not recognized at all When I burn this same test.iso to a cd-r and use a portable usb cd player from LG, it works on all three platforms: - On Linux: cd pops up, is correctly recognized as cdrom with MS Joliet extensions - On Mac: recognized like any cd - On Windows: recognized like any cd Anyone a idea how to debug this. Tried everything possible without success however. Thanks, Koen Kernel log of the host when using the g_mass_storage [2603447.184397] sd 89:0:0:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [2604311.036195] usb 1-4.3: new high speed USB device number 113 using ehci_hcd [2604311.175091] scsi90 : usb-storage 1-4.3:1.0 [2604312.253733] scsi 90:0:0:0: CD-ROM Linux File-Stor Gadget 0328 PQ: 0 ANSI: 2 [2604312.598205] sr1: scsi-1 drive [2604312.598397] sr 90:0:0:0: Attached scsi CD-ROM sr1 [2604312.598499] sr 90:0:0:0: Attached scsi generic sg2 type 5 [2604466.709488] usb 1-4.3: USB disconnect, device number 113 [2604477.068118] usb 1-4.3: new high speed USB device number 114 using ehci_hcd [2604477.225994] scsi91 : usb-storage 1-4.3:1.0 [2604478.305522] scsi 91:0:0:0: CD-ROM Linux File-Stor Gadget 0328 PQ: 0 ANSI: 2 [2604478.654759] sr1: scsi-1 drive [2604478.654952] sr 91:0:0:0: Attached scsi CD-ROM sr1 [2604478.655053] sr 91:0:0:0: Attached scsi generic sg2 type 5 Kernel log of the host when using the LG usb cd player: [2604562.264161] usb 1-4.4: new high speed USB device number 115 using ehci_hcd [2604562.366158] scsi92 : usb-storage 1-4.4:1.0 [2604563.370435] scsi 92:0:0:0: CD-ROM HL-DT-ST DVDRAM GP10NB21 1.00 PQ: 0 ANSI: 0 [2604563.426167] sr1: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray [2604563.426349] sr 92:0:0:0: Attached scsi CD-ROM sr1 [2604563.426475] sr 92:0:0:0: Attached scsi generic sg2 type 5 [2604575.182163] ISO 9660 Extensions: Microsoft Joliet Level 1 [2604575.183537] ISO 9660 Extensions: IEEE_P1282 Kernel log of device: (here is see unexpected things at MODE_SENSE_10). # modprobe g_mass_storage file=/lg.iso cdrom=1[ 2477.770000] g_mass_storage gadget: high speed config #1: Linux File-Backed Storage [ 2477.770000] g_mass_storage gadget: set_config: interface 0 (Mass Storage Function) requested delayed status [ 2477.770000] g_mass_storage gadget: delayed_status count 1 [ 2477.790000] g_mass_storage gadget: usb_composite_setup_continue [ 2477.800000] g_mass_storage gadget: usb_composite_setup_continue: Completing delayed status [ 2478.810000] g_mass_storage gadget: non-core control reqa1.fe v0000 i0000 l1 [ 2478.810000] g_mass_storage gadget: ep0-setup, length 8: [ 2478.810000] 00000000: a1 fe 00 00 00 00 01 00 [ 2478.810000] g_mass_storage gadget: get max LUN [ 2478.830000] g_mass_storage gadget: bulk-out, length 31: [ 2478.830000] 00000000: 55 53 42 43 01 00 00 00 24 00 00 00 80 00 06 12 [ 2478.830000] 00000010: 00 00 00 24 00 00 00 00 00 00 00 00 00 00 00 [ 2478.850000] g_mass_storage gadget: SCSI command: INQUIRY; Dc=6, Di=36; Hc=6, Hi=36 [ 2478.860000] g_mass_storage gadget: bulk-in, length 36: [ 2478.860000] 00000000: 05 80 02 02 1f 00 00 00 4c 69 6e 75 78 20 20 20 [ 2478.870000] 00000010: 46 69 6c 65 2d 53 74 6f 72 20 47 61 64 67 65 74 [ 2478.870000] 00000020: 30 33 32 38 [ 2478.880000] g_mass_storage gadget: bulk-in, length 13: [ 2478.880000] 00000000: 55 53 42 53 01 00 00 00 00 00 00 00 00 [ 2478.890000] g_mass_storage gadget: bulk-out, length 31: [ 2478.890000] 00000000: 55 53 42 43 02 00 00 00 00 00 00 00 00 00 06 00 [ 2478.890000] 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 2478.910000] g_mass_storage gadget: SCSI command: TEST UNIT READY; Dc=6, Dn=0; Hc=6, Hn=0 [ 2478.920000] g_mass_storage gadget: sending command-failure status [ 2478.930000] g_mass_storage gadget: sense data: SK x06, ASC x29, ASCQ x00; info x0 [ 2478.930000] g_mass_storage gadget: bulk-in, length 13: [ 2478.940000] 00000000: 55 53 42 53 02 00 00 00 00 00 00 00 01 [ 2478.950000] g_mass_storage gadget: bulk-out, length 31: [ 2478.950000] 00000000: 55 53 42 43 03 00 00 00 12 00 00 00 80 00 06 03 [ 2478.950000] 00000010: 00 00 00 12 00 00 00 00 00 00 00 00 00 00 00 [ 2478.960000] g_mass_storage gadget: SCSI command: REQUEST SENSE; Dc=6, Di=18; Hc=6, Hi=18 [ 2478.970000] g_mass_storage gadget: bulk-in, length 18: [ 2478.980000] 00000000: 70 00 06 00 00 00 00 0a 00 00 00 00 29 00 00 00 [ 2478.980000] 00000010: 00 00 [ 2478.990000] g_mass_storage gadget: bulk-in, length 13: [ 2478.990000] 00000000: 55 53 42 53 03 00 00 00 00 00 00 00 00 [ 2479.000000] g_mass_storage gadget: bulk-out, length 31: [ 2479.000000] 00000000: 55 53 42 43 04 00 00 00 00 00 00 00 00 00 06 00 [ 2479.000000] 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 2479.040000] g_mass_storage gadget: SCSI command: TEST UNIT READY; Dc=6, Dn=0; Hc=6, Hn=0 [ 2479.040000] g_mass_storage gadget: bulk-in, length 13: [ 2479.050000] 00000000: 55 53 42 53 04 00 00 00 00 00 00 00 00 [ 2479.060000] g_mass_storage gadget: bulk-out, length 31: [ 2479.060000] 00000000: 55 53 42 43 05 00 00 00 80 00 00 00 80 00 0a 5a [ 2479.060000] 00000010: 00 2a 00 00 00 00 00 80 00 00 00 00 00 00 00 [ 2479.080000] g_mass_storage gadget: SCSI command: MODE SENSE(10); Dc=10, Di=128; Hc=10, Hi=128 [ 2479.090000] g_mass_storage gadget: bulk-in, length 0: [ 2479.100000] g_mass_storage gadget: bulk-in set halt [ 2479.100000] g_mass_storage gadget: sending command-failure status [ 2479.110000] g_mass_storage gadget: sense data: SK x05, ASC x24, ASCQ x00; info x0 [ 2479.110000] g_mass_storage gadget: bulk-in, length 13: [ 2479.120000] 00000000: 55 53 42 53 05 00 00 00 80 00 00 00 01 [ 2479.130000] g_mass_storage gadget: bulk-out, length 31: [ 2479.130000] 00000000: 55 53 42 43 06 00 00 00 12 00 00 00 80 00 06 03 [ 2479.130000] 00000010: 00 00 00 12 00 00 00 00 00 00 00 00 00 00 00 [ 2479.150000] g_mass_storage gadget: SCSI command: REQUEST SENSE; Dc=6, Di=18; Hc=6, Hi=18 [ 2479.160000] g_mass_storage gadget: bulk-in, length 18: [ 2479.160000] 00000000: 70 00 05 00 00 00 00 0a 00 00 00 00 24 00 00 00 [ 2479.170000] 00000010: 00 00 [ 2479.170000] g_mass_storage gadget: bulk-in, length 13: [ 2479.180000] 00000000: 55 53 42 53 06 00 00 00 00 00 00 00 00 [ 2479.180000] g_mass_storage gadget: bulk-out, length 31: [ 2479.180000] 00000000: 55 53 42 43 07 00 00 00 08 00 00 00 80 00 0a 4a [ 2479.180000] 00000010: 01 00 00 10 00 00 00 08 00 00 00 00 00 00 00 -- 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
