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 devm_kstrdup(), as the driver parses the option string
once per probed device. Linux will automatically free the memory upon
releasing the device.
Done in preparation of switching the driver to struct option_iter and
constifying the option string.
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
drivers/video/fbdev/amifb.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/video/fbdev/amifb.c b/drivers/video/fbdev/amifb.c
index d88265dbebf4..9517aa5bd2c0 100644
--- a/drivers/video/fbdev/amifb.c
+++ b/drivers/video/fbdev/amifb.c
@@ -2345,7 +2345,7 @@ static void __init amifb_setup_mcap(char *spec)
amifb_vfmax = vmax;
}
-static int __init amifb_setup(char *options)
+static int __init amifb_setup(char *options, struct platform_device *pdev)
{
char *this_opt;
@@ -2363,8 +2363,10 @@ static int __init amifb_setup(char *options)
amifb_setup_mcap(this_opt + 11);
else if (!strncmp(this_opt, "fstart:", 7))
min_fstrt = simple_strtoul(this_opt + 7, NULL, 0);
- else
- mode_option = this_opt;
+ else {
+ // ignore errors
+ mode_option = devm_kstrdup(&pdev->dev, this_opt, GFP_KERNEL);
+ }
}
if (min_fstrt < 48)
@@ -3542,7 +3544,7 @@ static int __init amifb_probe(struct platform_device *pdev)
amifb_video_off();
return -ENODEV;
}
- amifb_setup(option);
+ amifb_setup(option, pdev);
#endif
custom.dmacon = DMAF_ALL | DMAF_MASTER;
--
2.39.2
