Re: [PATCH] scsi_debug: Convert to use root_device_register() and root_device_unregister()

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

On Mon, Sep 06, 2010 at 04:39:14PM -0700, Nicholas A. Bellinger wrote:
> On Mon, 2010-09-06 at 16:41 -0700, Dmitry Torokhov wrote:
> > On Mon, Sep 06, 2010 at 03:32:20PM -0700, Nicholas A. Bellinger wrote:
> > >  static int __init scsi_debug_init(void)
> > >  {
> > >  	unsigned long sz;
> > >  	int host_to_add;
> > >  	int k;
> > > -	int ret;
> > > +	int ret = 0;
> > >  
> > 
> > Please do not initialize error condition with success; when adding
> > additional initialization it makes easy to miss assigning proper return
> > value (as you seem to have) and return success in case of failure.
> 
> The reason this was added because my gcc (Debian 4.3.2-1.1) 4.3.2
> complained about this being possibily uninitialized..
> 

And rightly so - you did not assign a value to it when handling
root_device_register() failure. Compiler warnings are generally there
for a reason, not just a nuisance that should be shut off without a
second thought.

-- 
Dmitry