[PATCH 47/99] fbdev/mx3fb: Parse option string with struct option_iter
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2023-03-06 16:03:57
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/mx3fb.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/video/fbdev/mx3fb.c b/drivers/video/fbdev/mx3fb.c
index cf14fe08567a..cb9f5ac69e79 100644
--- a/drivers/video/fbdev/mx3fb.c
+++ b/drivers/video/fbdev/mx3fb.c@@ -6,6 +6,7 @@ * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. */ +#include <linux/cmdline.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/platform_device.h>
@@ -1653,17 +1654,16 @@ static struct platform_driver mx3fb_driver = { static int __init mx3fb_setup(void) { #ifndef MODULE - char *opt, *options = NULL; + char *options = NULL; + struct option_iter iter; + const char *opt; if (fb_get_options("mx3fb", &options)) return -ENODEV; - if (!options || !*options) - return 0; + option_iter_init(&iter, options); - while ((opt = strsep(&options, ",")) != NULL) { - if (!*opt) - continue; + while (option_iter_next(&iter, opt)) { if (!strncmp(opt, "bpp=", 4)) default_bpp = simple_strtoul(opt + 4, NULL, 0); else {
@@ -1678,6 +1678,8 @@ static int __init mx3fb_setup(void) fb_mode = mode_option_buf; } } + + option_iter_release(&iter); #endif return 0;
--
2.39.2