From: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Date: Mon, 14 Nov 2022 08:56:54 +0000 (+0800)
Subject: fbdev: vermilion: decrease reference count in error path
X-Git-Tag: v4.9.337~101
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=438383287958740239e277ac4b90d4ab1177a1d3;p=thirdparty%2Fkernel%2Fstable.git

fbdev: vermilion: decrease reference count in error path

[ Upstream commit 001f2cdb952a9566c77fb4b5470cc361db5601bb ]

pci_get_device() will increase the reference count for the returned
pci_dev. For the error path, we need to use pci_dev_put() to decrease
the reference count.

Fixes: dbe7e429fedb ("vmlfb: framebuffer driver for Intel Vermilion Range")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/video/fbdev/vermilion/vermilion.c b/drivers/video/fbdev/vermilion/vermilion.c
index 1c1e95a0b8faa..9774e9513ad0d 100644
--- a/drivers/video/fbdev/vermilion/vermilion.c
+++ b/drivers/video/fbdev/vermilion/vermilion.c
@@ -291,8 +291,10 @@ static int vmlfb_get_gpu(struct vml_par *par)
 
 	mutex_unlock(&vml_mutex);
 
-	if (pci_enable_device(par->gpu) < 0)
+	if (pci_enable_device(par->gpu) < 0) {
+		pci_dev_put(par->gpu);
 		return -ENODEV;
+	}
 
 	return 0;
 }