linux-kernel - [PATCH 2/2] i915: do not leak module ref counter

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Date:   Fri,  2 Aug 2019 21:39:56 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Chris Wilson <chris@...is-wilson.co.uk>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: [PATCH 2/2] i915: do not leak module ref counter

put_filesystem() before i915_gemfs_init() deals with
kern_mount() error.

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
---
 drivers/gpu/drm/i915/gem/i915_gemfs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gemfs.c b/drivers/gpu/drm/i915/gem/i915_gemfs.c
index cf05ba72df9d..d437188d1736 100644
--- a/drivers/gpu/drm/i915/gem/i915_gemfs.c
+++ b/drivers/gpu/drm/i915/gem/i915_gemfs.c
@@ -24,8 +24,10 @@ int i915_gemfs_init(struct drm_i915_private *i915)
 		return -ENODEV;
 
 	gemfs = kern_mount(type);
-	if (IS_ERR(gemfs))
+	if (IS_ERR(gemfs)) {
+		put_filesystem(type);
 		return PTR_ERR(gemfs);
+	}
 
 	/*
 	 * Enable huge-pages for objects that are at least HPAGE_PMD_SIZE, most
-- 
2.22.0