From 165d0c52fe87f8a95fcc01391432a659915bd332 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Fri, 13 Jul 2012 13:04:00 +0100 Subject: [PATCH] staging:iio:lpc32xx_adc: Ensure request_irq and free_irq dev_id parameter match 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: // @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(...) // Cc: Roland Stigge Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- drivers/staging/iio/adc/lpc32xx_adc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/iio/adc/lpc32xx_adc.c b/drivers/staging/iio/adc/lpc32xx_adc.c index 9690306d1f8f..348d051fc2f8 100644 --- a/drivers/staging/iio/adc/lpc32xx_adc.c +++ b/drivers/staging/iio/adc/lpc32xx_adc.c @@ -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); -- 2.39.5