linux-kernel - [PATCH AUTOSEL for 4.9 209/293] vmlfb: Fix error handling in cr_pll

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Date:   Mon, 9 Apr 2018 00:25:37 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Alexey Khoroshilov <khoroshilov@...ras.ru>,
        Alan Hourihane <alanh@...rlite.demon.co.uk>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.9 209/293] vmlfb: Fix error handling in
 cr_pll_init()

From: Alexey Khoroshilov <khoroshilov@...ras.ru>

[ Upstream commit 6af574e826740bf17663b48ba3f8fadb81d2113f ]

There is an error path, where iomemory is left mapped.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
Cc: Alan Hourihane <alanh@...rlite.demon.co.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/video/fbdev/vermilion/cr_pll.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/video/fbdev/vermilion/cr_pll.c b/drivers/video/fbdev/vermilion/cr_pll.c
index ebc6e6e0dd0f..ba105c876bed 100644
--- a/drivers/video/fbdev/vermilion/cr_pll.c
+++ b/drivers/video/fbdev/vermilion/cr_pll.c
@@ -185,6 +185,7 @@ static int __init cr_pll_init(void)
 	if (err) {
 		printk(KERN_ERR
 		       "Carillo Ranch failed to initialize vml_sys.\n");
+		iounmap(mch_regs_base);
 		pci_dev_put(mch_dev);
 		return err;
 	}
-- 
2.15.1