Re: [PATCH 1/3] spi: fsl-(e)spi: migrate to using devm_ functions to simplify cleanup

[Heiner Kallweit <hkallweit1-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Am 25.08.2015 um 19:43 schrieb Mark Brown:
> On Sun, Aug 23, 2015 at 02:20:58PM +0200, Heiner Kallweit wrote:
> 
>>  	/* Register for SPI Interrupt */
>> -	ret = request_irq(mpc8xxx_spi->irq, fsl_espi_irq,
>> +	ret = devm_request_irq(dev, mpc8xxx_spi->irq, fsl_espi_irq,
>>  			  0, "fsl_espi", mpc8xxx_spi);
> 
> Also, are you *sure* this conversion is safe?  One trick with interrupts
> is that the interrupt could still fire after the device removal function
> runs since devm_ dealloacation runs after that.
After each transfer interrupts are disabled (at end of fsl_espi_bufs).
Therefore I *think* it's safe.
And as resources are freed in reverse order (irq first), shouldn't this be enough
to be on the safe side?

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