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Subject[PATCH v2 044/101] fbdev/macfb: Parse option string with struct option_iter
Date
Use struct option_iter to walk over the individual options in the
driver's option string. Replaces the hand-written strsep() loop with
a clean interface. The helpers for struct option_iter handle empty
option strings and empty options transparently. The struct's _init
and _release functions duplicate and release the option string's
memory buffer as needed.

Done in preparation of constifying the option string.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/video/fbdev/macfb.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/video/fbdev/macfb.c b/drivers/video/fbdev/macfb.c
index 44ff860a3f37..c7e17a14daf1 100644
--- a/drivers/video/fbdev/macfb.c
+++ b/drivers/video/fbdev/macfb.c
@@ -20,6 +20,7 @@
* http://rajsky.psych.nyu.edu/Tips/VideoBugs.html
*/

+#include <linux/cmdline.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -504,23 +505,22 @@ static const struct fb_ops macfb_ops = {
.fb_imageblit = cfb_imageblit,
};

-static void __init macfb_setup(char *options)
+static void __init macfb_setup(const char *options)
{
+ struct option_iter iter;
char *this_opt;

- if (!options || !*options)
- return;
-
- while ((this_opt = strsep(&options, ",")) != NULL) {
- if (!*this_opt)
- continue;
+ option_iter_init(&iter, options);

+ while (option_iter_next(&iter, &this_opt)) {
if (!strcmp(this_opt, "inverse"))
fb_invert_cmaps();
else
if (!strcmp(this_opt, "vidtest"))
vidtest = 1; /* enable experimental CLUT code */
}
+
+ option_iter_release(&iter);
}

static void __init iounmap_macfb(void)
--
2.39.2
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