@@ -59,6 +59,7 @@ static int tgafb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info
static int tgafb_register(struct device *dev);
static void tgafb_unregister(struct device *dev);
+static const char *mode_option_buf;
static const char *mode_option;
static const char *mode_option_pci = "640x480@60";
static const char *mode_option_tc = "1280x1024@72";
@@ -1568,6 +1569,7 @@ static void tgafb_exit(void)
{
tc_unregister_driver(&tgafb_tc_driver);
pci_unregister_driver(&tgafb_pci_driver);
+ kfree(mode_option_buf);
}
#ifndef MODULE
@@ -1579,9 +1581,11 @@ static int tgafb_setup(char *arg)
while ((this_opt = strsep(&arg, ","))) {
if (!*this_opt)
continue;
- if (!strncmp(this_opt, "mode:", 5))
- mode_option = this_opt+5;
- else
+ if (!strncmp(this_opt, "mode:", 5)) {
+ kfree(mode_option_buf);
+ mode_option_buf = kstrdup(this_opt, GFP_KERNEL); // ignore errors
+ mode_option = mode_option_buf;
+ } else
printk(KERN_ERR
"tgafb: unknown parameter %s\n",
this_opt);
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/tgafb.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)