Re: [PATCH] drm/exynos: exynos_hdmi: Pass correct pointer to free_irq()

[Inki Dae <inki.dae@xxxxxxxxxxx>]

2013/5/21 Lars-Peter Clausen <lars@xxxxxxxxxx>

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@xxxxxxxxxx>
---
 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);

It's better to use devm_reqeust_irq instead. Anyway that was a bug. Applied.

Thanks,
Inki Dae
 

        /* hdmiphy i2c driver */
--
1.8.0

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