[Cocci] how to replace obsolete #ifdef's

["Enrico Weigelt, metux IT consult" <lkml@metux.net>]

Hi folks,


is there a way to replace obsolete #ifdef's via spatch ?

Here's my scenario:

In the linux kernel we have many places where drivers statically assign
pointers to match tables (eg. for oftree or acpi) into a global driver
struct - sometimes this is enclosed into some #ifdef CONFIG_..., when
things like oftree or acpi are optional.

Example patch for illustrating what I'd like to do:

--- a/sound/soc/codecs/pcm3060-i2c.c
+++ b/sound/soc/codecs/pcm3060-i2c.c
@@ -45,9 +45,7 @@ static int pcm3060_i2c_probe(struct i2c_client *i2c,
  static struct i2c_driver pcm3060_i2c_driver = {
         .driver = {
                 .name = "pcm3060",
-#ifdef CONFIG_OF
-               .of_match_table = pcm3060_of_match,
-#endif /* CONFIG_OF */
+               .of_match_table = of_match_ptr(pcm3060_of_match),
         },
         .id_table = pcm3060_i2c_id,
         .probe = pcm3060_i2c_probe,


Just wrapping the assignment into the macro call turned out to be easy.
But I haven't found a way to remove the now #ifdef :(

Any idea how I could solve this ?


--mtx

-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@metux.net -- +49-151-27565287
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