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List: linux-fbdev
Subject: [PATCH AUTOSEL 4.4 57/80] video: clps711x-fb: release disp device node in probe()
From: Sasha Levin <sashal () kernel ! org>
Date: 2019-01-28 16:23:38
Message-ID: 20190128162401.58841-57-sashal () kernel ! org
[Download RAW message or body]
From: Alexey Khoroshilov <khoroshilov@ispras.ru>
[ Upstream commit fdac751355cd76e049f628afe6acb8ff4b1399f7 ]
clps711x_fb_probe() increments refcnt of disp device node by
of_parse_phandle() and leaves it undecremented on both
successful and error paths.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/video/fbdev/clps711x-fb.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/clps711x-fb.c b/drivers/video/fbdev/clps711x-fb.c
index 649b32f78c08..c55109524fd5 100644
--- a/drivers/video/fbdev/clps711x-fb.c
+++ b/drivers/video/fbdev/clps711x-fb.c
@@ -287,14 +287,17 @@ static int clps711x_fb_probe(struct platform_device *pdev)
}
ret = of_get_fb_videomode(disp, &cfb->mode, OF_USE_NATIVE_MODE);
- if (ret)
+ if (ret) {
+ of_node_put(disp);
goto out_fb_release;
+ }
of_property_read_u32(disp, "ac-prescale", &cfb->ac_prescale);
cfb->cmap_invert = of_property_read_bool(disp, "cmap-invert");
ret = of_property_read_u32(disp, "bits-per-pixel",
&info->var.bits_per_pixel);
+ of_node_put(disp);
if (ret)
goto out_fb_release;
--
2.19.1
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