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@xxxxxxx>
---
drivers/video/fbdev/vfb.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/drivers/video/fbdev/vfb.c b/drivers/video/fbdev/vfb.c
index 15a6a0896ab5..ef22a6815e70 100644
--- a/drivers/video/fbdev/vfb.c
+++ b/drivers/video/fbdev/vfb.c
@@ -10,6 +10,7 @@
* more details.
*/
+#include <linux/cmdline.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -392,9 +393,10 @@ static int vfb_mmap(struct fb_info *info,
* The virtual framebuffer driver is only enabled if explicitly
* requested by passing 'video=vfb:' (or any actual options).
*/
-static int __init vfb_setup(char *options)
+static int __init vfb_setup(const char *options)
{
- char *this_opt;
+ struct option_iter iter;
+ const char *this_opt;
vfb_enable = 0;
@@ -403,12 +405,9 @@ static int __init vfb_setup(char *options)
vfb_enable = 1;
- if (!*options)
- return 1;
+ option_iter_init(&iter, options);
- while ((this_opt = strsep(&options, ",")) != NULL) {
- if (!*this_opt)
- continue;
+ while (option_iter_next(&iter, this_opt)) {
/* Test disable for backwards compatibility */
if (!strcmp(this_opt, "disable"))
vfb_enable = 0;
@@ -424,6 +423,9 @@ static int __init vfb_setup(char *options)
mode_option = mode_option_buf;
}
}
+
+ option_iter_release(&iter);
+
return 1;
}
#endif /* MODULE */
--
2.39.2
