[PATCH 2/7] input: pxa27x_keypad: Pass correct pointer to free_irq()

From: Lars-Peter Clausen
Date: Mon May 20 2013 - 10:54:03 EST


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

The issue was found using the following coccinelle script:

<smpl>
@r1@
type T;
T devid;
@@
request_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/input/keyboard/pxa27x_keypad.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c
index 74e30cc..b674e7a 100644
--- a/drivers/input/keyboard/pxa27x_keypad.c
+++ b/drivers/input/keyboard/pxa27x_keypad.c
@@ -582,7 +582,7 @@ static int pxa27x_keypad_probe(struct platform_device *pdev)
return 0;

failed_free_irq:
- free_irq(irq, pdev);
+ free_irq(irq, keypad);
failed_put_clk:
clk_put(keypad->clk);
failed_free_io:
@@ -600,7 +600,7 @@ static int pxa27x_keypad_remove(struct platform_device *pdev)
struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
struct resource *res;

- free_irq(keypad->irq, pdev);
+ free_irq(keypad->irq, keypad);
clk_put(keypad->clk);

input_unregister_device(keypad->input_dev);
--
1.8.0

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