[PATCH v2 028/101] fbdev/grvga: Duplicate video-mode option string

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@suse.de>
---
 drivers/video/fbdev/grvga.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/grvga.c b/drivers/video/fbdev/grvga.c
index 24818b276241..28c2e0e0763a 100644
--- a/drivers/video/fbdev/grvga.c
+++ b/drivers/video/fbdev/grvga.c

@@ -370,7 +370,7 @@ static int grvga_probe(struct platform_device *dev)
 		else if (!strncmp(this_opt, "size", 4))
 			grvga_mem_size = simple_strtoul(this_opt + 5, NULL, 0);
 		else
-			mode_opt = this_opt;
+			mode_opt = devm_kstrdup(&dev->dev, opt, GFP_KERNEL); // ignore errors
 	}
 
 	par = info->par;

-- 
2.39.2