[PATCH 6.6.y 2/2] fbdev: efifb: fix memory leak in efifb_probe()

[Sasha Levin <sashal@kernel.org>]

From: Abdun Nihaal <nihaal@cse.iitm.ac.in>

[ Upstream commit 9b6eaf101656958397a6012bf43f6e2e42c9e5cb ]

Since commit 73ce73c30ba9 ("fbdev: Transfer video= option strings to
caller; clarify ownership") the string returned from fb_get_options()
is expected to be freed by the caller, but the string is not freed in
efifb_probe(). Fix that by freeing the option string after setup.

Fixes: 73ce73c30ba9 ("fbdev: Transfer video= option strings to caller; clarify ownership")
Cc: stable@vger.kernel.org
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/video/fbdev/efifb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index d6a05ef0cc9027..945af6db125537 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -375,6 +375,7 @@ static int efifb_probe(struct platform_device *dev)
 	if (fb_get_options("efifb", &option))
 		return -ENODEV;
 	efifb_setup(si, option);
+	kfree(option);
 
 	/* We don't get linelength from UGA Draw Protocol, only from
 	 * EFI Graphics Protocol.  So if it's not in DMI, and it's not
-- 
2.53.0