diff options
| author | André Goddard Rosa <andre.goddard@gmail.com> | 2009-12-14 18:01:06 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-15 08:53:32 -0800 |
| commit | e7d2860b690d4f3bed6824757c540579638e3d1e (patch) | |
| tree | 84268ee28893256fd6a6a7e1d4474f61dbee74e7 /drivers/leds | |
| parent | 84c95c9acf088c99d8793d78036b67faa5d0b851 (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 'drivers/leds')
| -rw-r--r-- | drivers/leds/led-class.c | 2 | ||||
| -rw-r--r-- | drivers/leds/ledtrig-timer.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index f2cc13d7681..782f95822ea 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -50,7 +50,7 @@ static ssize_t led_brightness_store(struct device *dev, unsigned long state = simple_strtoul(buf, &after, 10); size_t count = after - buf; - if (*after && isspace(*after)) + if (isspace(*after)) count++; if (count == size) { diff --git a/drivers/leds/ledtrig-timer.c b/drivers/leds/ledtrig-timer.c index 3b83406de75..38b3378be44 100644 --- a/drivers/leds/ledtrig-timer.c +++ b/drivers/leds/ledtrig-timer.c @@ -83,7 +83,7 @@ static ssize_t led_delay_on_store(struct device *dev, unsigned long state = simple_strtoul(buf, &after, 10); size_t count = after - buf; - if (*after && isspace(*after)) + if (isspace(*after)) count++; if (count == size) { @@ -127,7 +127,7 @@ static ssize_t led_delay_off_store(struct device *dev, unsigned long state = simple_strtoul(buf, &after, 10); size_t count = after - buf; - if (*after && isspace(*after)) + if (isspace(*after)) count++; if (count == size) { |