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authorAndré Goddard Rosa <andre.goddard@gmail.com>2009-12-14 18:01:06 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-15 08:53:32 -0800
commite7d2860b690d4f3bed6824757c540579638e3d1e (patch)
tree84268ee28893256fd6a6a7e1d4474f61dbee74e7 /sound
parent84c95c9acf088c99d8793d78036b67faa5d0b851 (diff)
tree-wide: convert open calls to remove spaces to skip_spaces() lib function
Makes use of skip_spaces() defined in lib/string.c for removing leading spaces from strings all over the tree. It decreases lib.a code size by 47 bytes and reuses the function tree-wide: text data bss dec hex filename 64688 584 592 65864 10148 (TOTALS-BEFORE) 64641 584 592 65817 10119 (TOTALS-AFTER) Also, while at it, if we see (*str && isspace(*str)), we can be sure to remove the first condition (*str) as the second one (isspace(*str)) also evaluates to 0 whenever *str == 0, making it redundant. In other words, "a char equals zero is never a space". Julia Lawall tried the semantic patch (http://coccinelle.lip6.fr) below, and found occurrences of this pattern on 3 more files: drivers/leds/led-class.c drivers/leds/ledtrig-timer.c drivers/video/output.c @@ expression str; @@ ( // ignore skip_spaces cases while (*str && isspace(*str)) { \(str++;\|++str;\) } | - *str && isspace(*str) ) Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com> Cc: Julia Lawall <julia@diku.dk> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Neil Brown <neilb@suse.de> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: David Howells <dhowells@redhat.com> Cc: <linux-ext4@vger.kernel.org> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: Patrick McHardy <kaber@trash.net> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/hda_hwdep.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c
index d24328661c6..40ccb419b6e 100644
--- a/sound/pci/hda/hda_hwdep.c
+++ b/sound/pci/hda/hda_hwdep.c
@@ -24,6 +24,7 @@
#include <linux/compat.h>
#include <linux/mutex.h>
#include <linux/ctype.h>
+#include <linux/string.h>
#include <linux/firmware.h>
#include <sound/core.h>
#include "hda_codec.h"
@@ -428,8 +429,7 @@ static int parse_hints(struct hda_codec *codec, const char *buf)
char *key, *val;
struct hda_hint *hint;
- while (isspace(*buf))
- buf++;
+ buf = skip_spaces(buf);
if (!*buf || *buf == '#' || *buf == '\n')
return 0;
if (*buf == '=')
@@ -444,8 +444,7 @@ static int parse_hints(struct hda_codec *codec, const char *buf)
return -EINVAL;
}
*val++ = 0;
- while (isspace(*val))
- val++;
+ val = skip_spaces(val);
remove_trail_spaces(key);
remove_trail_spaces(val);
hint = get_hint(codec, key);