On Fri, 29 Jun 2007, Lonsn wrote: > Dear all: > When I use the g_file_strogae.ko module, I failed to write big file to > the disk. > Hardware platform: > CPU: S3C2440A > SDRAM: 32M sdram > Kernel:2.6.21.3 with s3c2410_udc patch > <http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/gregkh-03-usb/usb-gadget-driver-for-samsung-s3c2410-arm-soc.patch> > > I plug a 256MBytes usb flashdisk(fat32 type) into the board usb host > interface, and connect a usb line between the board usb device interface > and a PC with WinXP OS. > In the board side, I use the following command: > #> insmod ./g_file_storage.ko file=/dev/sda removable=1 > where /dev/sda is the external 256MB flash disk. > Then in the PC side, XP can recognize the board as a usb mass storage > device. And read big file(3Mbytes) is OK. > But when I write a big file(3Mbytes) into the board from XP side, the > speed is very slow and finally failed. (Write a 3KBytes file is OK). In > the board side, kernel repeatedly printed following message every > several seconds. "g_file_storage gadget: full speed config #1". > What's wrong with it?
To get more information, turn on the debugging options DEBUG, VERBOSE, and DUMP_MSGS near the start of file_storage.c. Then post the kernel debugging log from the gadget. Alan Stern ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
