Re: [PATCH] PowerPC: kernel: need return the related error code when failure occurs.

2013-05-21 Thread Chen Gang
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() >> >

Re: [PATCH] PowerPC: kernel: need return the related error code when failure occurs.

2013-05-21 Thread Paul Mackerras
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 '*pp

[PATCH] PowerPC: kernel: need return the related error code when failure occurs.

2013-05-20 Thread Chen Gang
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) The original related patch