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[POWERPC] arch/powerpc/platforms/82xx: Add missing of_node_put

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Of_get_parent and of_find_compatible_node do a of_node_get, and thus a
corresponding of_code_put is needed in both the error case and the normal
return case.

The problem was found using the following semantic match.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
type T,T1,T2;
identifier E;
statement S;
expression x1,x2,x3;
int ret;
@@

  T E;
  ...
* E = \(of_get_parent\|of_find_compatible_node\)(...);
  if (E == NULL) S
  ... when != of_node_put(...,(T1)E,...)
      when != if (E != NULL) { ... of_node_put(...,(T1)E,...); ...}
      when != x1 = (T1)E
      when != E = x3;
      when any
  if (...) {
    ... when != of_node_put(...,(T2)E,...)
        when != if (E != NULL) { ... of_node_put(...,(T2)E,...); ...}
        when != x2 = (T2)E
(
*   return;
|
*   return ret;
)
  }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Julia Lawall 2008-02-04 23:35:00 -08:00 committed by Paul Mackerras
parent b1725c9319
commit 75e89b02e3
2 changed files with 2 additions and 4 deletions
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3
arch/powerpc/platforms/82xx/mpc8272_ads.c
View File

@ -134,13 +134,12 @@ static void __init mpc8272_ads_setup_arch(void)
}
bcsr = of_iomap(np, 0);
of_node_put(np);
if (!bcsr) {
printk(KERN_ERR "Cannot map BCSR registers\n");
return;
}
of_node_put(np);
clrbits32(&bcsr[1], BCSR1_RS232_EN1 | BCSR1_RS232_EN2 | BCSR1_FETHIEN);
setbits32(&bcsr[1], BCSR1_FETH_RST);

3
arch/powerpc/platforms/82xx/pq2fads.c
View File

@ -130,13 +130,12 @@ static void __init pq2fads_setup_arch(void)
}
bcsr = of_iomap(np, 0);
of_node_put(np);
if (!bcsr) {
printk(KERN_ERR "Cannot map BCSR registers\n");
return;
}
of_node_put(np);
/* Enable the serial and ethernet ports */
clrbits32(&bcsr[1], BCSR1_RS232_EN1 | BCSR1_RS232_EN2 | BCSR1_FETHIEN);