On 05/21/2013 04:10 PM, Paul Mackerras wrote: > On Tue, May 21, 2013 at 01:48:58PM +0800, Chen Gang wrote: >> > >> > When error occurs, need return the related error code to let upper >> > caller know about it. >> > >> > ppc_md.nvram_size() can return the error code (e.g. core99_nvram_size() >> > in 'arch/powerpc/platforms/powermac/nvram.c'). >> > >> > And when '*ppos >= size', need return -ESPIPE (Illegal seek) > Why? When *ppos >= size, it should return 0 (end of file) in my opinion. > ESPIPE means that any seek would be ineffective, not that a particular > seek went out of bounds.
OK, thanks, I will send patch v2. :-) Thanks. -- Chen Gang Asianux Corporation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
