[PATCH v2 051/101] fbdev/nvidiafb: Parse option string with struct option_iter
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2023-03-09 16:07:14
Also in:
dri-devel, lkml
Subsystem:
framebuffer layer, nvidia (rivafb and nvidiafb) framebuffer driver, the rest · Maintainers:
Helge Deller, Antonino Daplas, 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/nvidia/nvidia.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/video/fbdev/nvidia/nvidia.c b/drivers/video/fbdev/nvidia/nvidia.c
index 8ad4bcff84df..d779163f919a 100644
--- a/drivers/video/fbdev/nvidia/nvidia.c
+++ b/drivers/video/fbdev/nvidia/nvidia.c@@ -10,6 +10,7 @@ */ #include <linux/aperture.h> +#include <linux/cmdline.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h>
@@ -1459,17 +1460,18 @@ static void nvidiafb_remove(struct pci_dev *pd) * ------------------------------------------------------------------------- */ #ifndef MODULE -static int nvidiafb_setup(char *options) +static int nvidiafb_setup(const char *options) { + struct option_iter iter; char *this_opt; NVTRACE_ENTER(); - if (!options || !*options) - return 0; - while ((this_opt = strsep(&options, ",")) != NULL) { + option_iter_init(&iter, options); + + while (option_iter_next(&iter, &this_opt)) { if (!strncmp(this_opt, "forceCRTC", 9)) { - char *p; + const char *p; p = this_opt + 9; if (!*p || !*(++p))
@@ -1505,6 +1507,9 @@ static int nvidiafb_setup(char *options) mode_option = mode_option_buf; } } + + option_iter_release(&iter); + NVTRACE_LEAVE(); return 0; }
--
2.39.2