From: Pan Bian <bianpan2016@163.com>
Date: Wed, 28 Nov 2018 02:57:33 +0000 (+0800)
Subject: ubi: Put MTD device after it is not used
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=628eaca54b500244deb3cd28fea181204fffc9c9;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

ubi: Put MTD device after it is not used

[ Upstream commit b95f83ab762dd6211351b9140f99f43644076ca8 ]

The MTD device reference is dropped via put_mtd_device, however its
field ->index is read and passed to ubi_msg. To fix this, the patch
moves the reference dropping after calling ubi_msg.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 6445c693d935..0104d9537329 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -1092,10 +1092,10 @@ int ubi_detach_mtd_dev(int ubi_num, int anyway)
 	ubi_wl_close(ubi);
 	ubi_free_internal_volumes(ubi);
 	vfree(ubi->vtbl);
-	put_mtd_device(ubi->mtd);
 	vfree(ubi->peb_buf);
 	vfree(ubi->fm_buf);
 	ubi_msg(ubi, "mtd%d is detached", ubi->mtd->index);
+	put_mtd_device(ubi->mtd);
 	put_device(&ubi->dev);
 	return 0;
 }