From: Quentin Lambert <lambert.quentin@gmail.com>
Date: Wed, 11 Mar 2015 14:22:00 +0000 (+0100)
Subject: Staging: dgnc: Use goto for error handling
X-Git-Tag: omap-for-v4.2/o2_dc~155^2~138^2~472
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f6a14cf04fdb17de8a96c59518909216f6892e19;p=pandora-kernel.git

Staging: dgnc: Use goto for error handling

This patch introduces goto statments for error handling
and in cases where a lock needs to be released.

A simplified version of the semantic patch that finds this problem is as
follows: (http://coccinelle.lip6.fr)

@candidates exists@
identifier f, label;
statement s;
position p1, p2, p3;
@@

  f@p1(...) {
  ...when any

    if@p2(...) {
    ...when any
      s

      return@p3 ...;
    }
  ...when any
  }

@good1 exists@
identifier candidates.f, candidates.label;
statement candidates.s;
position candidates.p1, candidates.p2;
@@

  f@p1(...) {
  ...when any

    if(...) {
    ...when any
      s
      return ...;
    }
    ...when any

    if@p2(...) {...}
  ...when any
 }

@depends on good1@
identifier candidates.f, candidates.label;
position candidates.p1, candidates.p3;
@@

   f@p1(...) {
   ...when any
*  return@p3 ...;
  }

Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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