linux-kernel - [PATCH] drm/exynos: exynos_hdmi: Pass correct pointer to free

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Message-Id: <1369071126-7020-1-git-send-email-lars@metafoo.de>
Date:	Mon, 20 May 2013 19:32:06 +0200
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Inki Dae <inki.dae@...sung.com>,
	Joonyoung Shim <jy0922.shim@...sung.com>,
	Seung-Woo Kim <sw0312.kim@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	David Airlie <airlied@...ux.ie>
Cc:	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	Lars-Peter Clausen <lars@...afoo.de>
Subject: [PATCH] drm/exynos: exynos_hdmi: Pass correct pointer to free_irq()

free_irq() expects the same pointer that was passed to request_threaded_irq(),
otherwise the IRQ is not freed.

The issue was found using the following coccinelle script:

<smpl>
@r1@
type T;
T devid;
@@
request_threaded_irq(..., devid)

@r2@
type r1.T;
T devid;
position p;
@@
free_irq@p(..., devid)

@@
position p != r2.p;
@@
*free_irq@p(...)
</smpl>

Signed-off-by: Lars-Peter Clausen <lars@...afoo.de>
---
 drivers/gpu/drm/exynos/exynos_hdmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index bbfc384..7e99853 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -2082,7 +2082,7 @@ static int hdmi_remove(struct platform_device *pdev)
 
 	pm_runtime_disable(dev);
 
-	free_irq(hdata->irq, hdata);
+	free_irq(hdata->irq, ctx);
 
 
 	/* hdmiphy i2c driver */
-- 
1.8.0

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