[PATCH v2 021/101] fbdev/fm2fb: Parse option string with struct option_iter
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2023-03-09 16:05:27
Also in:
dri-devel, lkml
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
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/fm2fb.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/video/fbdev/fm2fb.c b/drivers/video/fbdev/fm2fb.c
index 942e382cf1cf..a787884a6a7f 100644
--- a/drivers/video/fbdev/fm2fb.c
+++ b/drivers/video/fbdev/fm2fb.c@@ -14,6 +14,7 @@ * more details. */ +#include <linux/cmdline.h> #include <linux/module.h> #include <linux/mm.h> #include <linux/fb.h>
@@ -293,19 +294,22 @@ static int fm2fb_probe(struct zorro_dev *z, const struct zorro_device_id *id) return 0; } -static int __init fm2fb_setup(char *options) +static int __init fm2fb_setup(const char *options) { + struct option_iter iter; char *this_opt; - if (!options || !*options) - return 0; + option_iter_init(&iter, options); - while ((this_opt = strsep(&options, ",")) != NULL) { + while (option_iter_next(&iter, &this_opt)) { if (!strncmp(this_opt, "pal", 3)) fm2fb_mode = FM2FB_MODE_PAL; else if (!strncmp(this_opt, "ntsc", 4)) fm2fb_mode = FM2FB_MODE_NTSC; } + + option_iter_release(&iter); + return 0; }
--
2.39.2