On Mon, Jan 19, 2009 at 10:54:02AM +0800, Gao, Yunpeng wrote: > I have to use 64bit variable in my 2.6.27 kernel NAND driver as below: > --------------------------------------------------------------------------- > u64 NAND_capacity; > unsigned int block_num, block_size; > ... > block_num = NAND_capacity / block_size; > --------------------------------------------------------------------------- > but it failed when compiling and reports 'undefined reference to `__udivdi3'. Presumably block_size is a power of two, so you can do: block_num = NAND_capacity >> block_shift; -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step." -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
|