linux-kernel - Re: [Xen-devel] [PATCH 3/3 v2] xen/xenbus: Improve failure processing code for __xenbus_switch

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Date:	Mon, 22 Sep 2014 16:04:19 +0100
From:	David Vrabel <david.vrabel@...rix.com>
To:	Chen Gang <gang.chen.5i5j@...il.com>,
	David Vrabel <david.vrabel@...rix.com>,
	<konrad.wilk@...cle.com>, <boris.ostrovsky@...cle.com>,
	<stefano.stabellini@...citrix.com>, <mukesh.rathor@...cle.com>
CC:	<xen-devel@...ts.xenproject.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [Xen-devel] [PATCH 3/3 v2] xen/xenbus: Improve failure processing
 code for __xenbus_switch_state()

On 18/09/14 15:01, Chen Gang wrote:
> When failure occurs, need return failure code instead of 0, or some of
> indirect upper callers may misunderstand.
> 
> e.g. in "block/xen-blkback/xenbus.c":
> 
>     connect() -> xenbus_switch_state() -> __xenbus_switch_state().

Can you make xenbus_switch_state() void?  The callers don't need to do
any error handling.

David
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