@@ -54,6 +54,7 @@
* Driver data
*/
static int hwcursor = 1;
+static char *mode_option_buf;
static char *mode_option;
static bool noaccel;
static bool nomtrr;
@@ -1526,8 +1527,11 @@ static int __init pm3fb_setup(char *options)
hwcursor = simple_strtoul(this_opt + 9, NULL, 0);
else if (!strncmp(this_opt, "nomtrr", 6))
nomtrr = 1;
- else
- mode_option = this_opt;
+ else {
+ kfree(mode_option_buf);
+ mode_option_buf = kstrdup(this_opt, GFP_KERNEL); // ignore errors
+ mode_option = mode_option_buf;
+ }
}
return 0;
}
@@ -1558,6 +1562,7 @@ static int __init pm3fb_init(void)
static void __exit pm3fb_exit(void)
{
pci_unregister_driver(&pm3fb_driver);
+ kfree(mode_option_buf);
}
module_exit(pm3fb_exit);
Assume that the driver does not own the option string or its substrings and hence duplicate the option string for the video mode. Allocate the copy's memory with kstrdup() and free it in the module's exit function. Done in preparation of switching the driver to struct option_iter and constifying the option string. v2: * replace static memory with kstrdup()/kfree() (Geert) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> --- drivers/video/fbdev/pm3fb.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)