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Message-Id: <20230309160201.5163-22-tzimmermann@suse.de>
Date: Thu, 9 Mar 2023 17:00:41 +0100
From: Thomas Zimmermann <tzimmermann@...e.de>
To: deller@....de, geert+renesas@...der.be, timur@...nel.org,
rdunlap@...radead.org, paulus@...ba.org, benh@...nel.crashing.org,
linux@...linux.org.uk, pjones@...hat.com, adaplas@...il.com,
s.hauer@...gutronix.de, shawnguo@...nel.org, mbroemme@...mpq.org,
thomas@...ischhofer.net, James.Bottomley@...senPartnership.com,
sudipm.mukherjee@...il.com, teddy.wang@...iconmotion.com,
corbet@....net
Cc: linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
Thomas Zimmermann <tzimmermann@...e.de>
Subject: [PATCH v2 021/101] fbdev/fm2fb: Parse option string with struct option_iter
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@...e.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
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