[PATCH 33/99] fbdev/i740fb: Parse option string with struct option_iter
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2023-03-06 16:02:45
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/i740fb.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/drivers/video/fbdev/i740fb.c b/drivers/video/fbdev/i740fb.c
index dd4b5c717e8e..cf45d6280f38 100644
--- a/drivers/video/fbdev/i740fb.c
+++ b/drivers/video/fbdev/i740fb.c@@ -13,6 +13,7 @@ */ #include <linux/aperture.h> +#include <linux/cmdline.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h>
@@ -1261,17 +1262,15 @@ static struct pci_driver i740fb_driver = { }; #ifndef MODULE -static int __init i740fb_setup(char *options) +static int __init i740fb_setup(const char *options) { - char *opt; + struct option_iter iter; + const char *opt; - if (!options || !*options) - return 0; + option_iter_init(&iter, options); - while ((opt = strsep(&options, ",")) != NULL) { - if (!*opt) - continue; - else if (!strncmp(opt, "mtrr:", 5)) + while (option_iter_next(&iter, opt)) { + if (!strncmp(opt, "mtrr:", 5)) mtrr = simple_strtoul(opt + 5, NULL, 0); else { static char mode_option_buf[256];
@@ -1286,6 +1285,8 @@ static int __init i740fb_setup(char *options) } } + option_iter_release(&iter); + return 0; } #endif
--
2.39.2