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staging:iio:lpc32xx_adc: Ensure request_irq and free_irq dev_id parameter match

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The data parameters for request_irq and free_irq have to match, otherwise the
IRQ wont be freed.

The issue has been discovered using the following coccinelle patch:

// <smpl>
@r1@
type T;
T data;
@@
(
request_irq(..., (void *)data)
|
request_irq(..., data)
|
request_threaded_irq(..., (void *)data)
|
request_threaded_irq(..., data)
)

@r2@
type r1.T;
T data;
position p;
@@
(
free_irq@p(..., (void *)data)
|
free_irq@p(..., data)
)

@depends on r1@
position p != r2.p;
@@
*free_irq@p(...)

// </smpl>

Cc: Roland Stigge <stigge@antcom.de>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2012-07-13 13:04:00 +01:00 committed by Jonathan Cameron
parent 79d2a6bd14
commit 165d0c52fe
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/iio/adc/lpc32xx_adc.c
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@ -196,7 +196,7 @@ static int __devinit lpc32xx_adc_probe(struct platform_device *pdev)
return 0;
errout5:
free_irq(irq, iodev);
free_irq(irq, info);
errout4:
clk_put(info->clk);
errout3:
@ -214,7 +214,7 @@ static int __devexit lpc32xx_adc_remove(struct platform_device *pdev)
int irq = platform_get_irq(pdev, 0);
iio_device_unregister(iodev);
free_irq(irq, iodev);
free_irq(irq, info);
platform_set_drvdata(pdev, NULL);
clk_put(info->clk);
iounmap(info->adc_base);