On Mon, 10 Dec 2012, victor wrote: > Hi, > > I am working on a new UDC for a new USB chip. The kernel version is 3.4.4. When I insmod the new UDC, it is ok. When I insmod the file storage gadget , error occurred "No such device". > > # ls > g_file_storage.ko g_mass_storage.ko kagen2_udc.ko > # insmod kagen2_udc.ko > # insmod g_file_storage.ko file=/dev/mmcblk0 > insmod: can't insert 'g_file_storage.ko': No such device > # insmod g_file_storage.ko file=/dev/mmcblk0p1 > insmod: can't insert 'g_file_storage.ko': No such device > > do I insmod the file storage gadget separately? The /dev/mmcblk0 refers to SD card, right? I insmod the sd card driver already. > > # lsmod > kagen2_udc 7262 0 - Live 0xbf02f000 > ka2000_sdio 6643 0 - Live 0xbf005000 > ka2000_sdhc 5291 0 - Live 0xbf000000 Did you check that the /dev/mmcblk0 and /dev/mmcblk0p1 devices exist? Did you look in the dmesg log for other messages? 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