Messages in this thread Patch in this message | | | From | Lars-Peter Clausen <> | Subject | [PATCH 2/7] input: pxa27x_keypad: Pass correct pointer to free_irq() | Date | Mon, 20 May 2013 16:51:21 +0200 |
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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@metafoo.de> --- 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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