linux-kernel - Re: [PATCH] kernel/module.c: for looping, need use 'goto' instead of 'break' to jump out in time

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Date:	Wed, 08 May 2013 11:09:10 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] kernel/module.c: for looping, need use 'goto' instead
 of 'break' to jump out in time

On 2013年05月08日 08:29, Rusty Russell wrote:
> Chen Gang <gang.chen@...anux.com> writes:
>> > In the 'for' looping, when error occurs, the 'break' only jump out of
>> > 'switch', and still in 'for' looping.  If error occurs multiple times,
>> > the original error value will be overwrite.
>> >
>> > Currently, that will not cause issue, but still better to improve it,
>> > so that let it return the first real error code in time.
> We choose to print all the problems, rather than just one.  I don't
> really mind though.
> 

It sounds good: "choose to print all the problems, rather than just one"

If so, it seems enough to only return a bool value to known whether
success or fail, do not need the error details any more (since they are
already been printed)

> It we want this patch, it would be neater to just 'return -ENOEXEC'
> and 'return PTR_ERR(ksym) ?: -ENOENT'.

If we really want this patch (still only print the first error, and
return the real error value), I should send patch v2 (also 'ret' is
obsoleted)

Thanks.

-- 
Chen Gang

Asianux Corporation
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