or, may be we need to detect the buffer size in usb_stor_read, to prevent it from "out of range" ?
On Mon, Jul 19, 2010 at 4:45 PM, wesley xie <elelon...@gmail.com> wrote: > sorry, typo in the title, it is 4096 > > > On Mon, Jul 19, 2010 at 4:44 PM, wesley xie <elelon...@gmail.com> wrote: > >> I have a udisk(My MP3), which is fat32 format, and the fs block size is >> 4096(report by u-boot). >> >> enable USB and FAT support for u-boot. >> >> do "usb start" cause the system to restart. after looking into the u-boot >> code, I find that the "DEFAULT_SECTOR_SIZE" in disk/part_dos.h is too >> small(512) to fit a fat sector, so system run into a "out of range" trouble >> when it go into usb_storage.c/usb_stor_read() function. >> >> and I also need to change the "FS_BLOCK_SIZE" in include/fat.h to 4096, >> otherwise, the "fatinfo/fatls/fatread" would run into the same trouble. >> >> These is also check in u-boot-2010.06 code. >> >> The FAT doc say the number of bytes per sector will be one of 512 , 1024, >> 2048, 4096, so i guess that I may need to use something like "malloc" to >> alloc the sector buffer ? But it seems difficult to do. >> >> Any idea ? >> >> Thanks. >> >> /WX >> > >
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