Commit 76728a93 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
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staging: comedi: pcmmio: quiet NULL pointer sparse noise 



The comedi_async 'inttrig' member is a pointer to a callback
function. NULL should be used to clear it not 0.

This quiets a number of sparse warnings about:

Warning: Using plain integer as NULL pointer

Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d163a19d

drivers/staging/comedi/drivers/pcmmio.c

+2 −2
Original line number Diff line number Diff line
@@ -512,7 +512,7 @@ static void pcmmio_stop_intr(struct comedi_device *dev, 


	subpriv->dio.intr.enabled_mask = 0;

	subpriv->dio.intr.active = 0;

	s->async->inttrig = 0;

	s->async->inttrig = NULL;

	nports = subpriv->dio.intr.num_asic_chans / CHANS_PER_PORT;

	firstport = subpriv->dio.intr.asic_chan / CHANS_PER_PORT;

	switch_page(dev, asic, PAGE_ENAB);
@@ -778,7 +778,7 @@ pcmmio_inttrig_start_intr(struct comedi_device *dev, struct comedi_subdevice *s, 
		return -EINVAL;



	spin_lock_irqsave(&subpriv->dio.intr.spinlock, flags);

	s->async->inttrig = 0;

	s->async->inttrig = NULL;

	if (subpriv->dio.intr.active)

		event = pcmmio_start_intr(dev, s);

	spin_unlock_irqrestore(&subpriv->dio.intr.spinlock, flags);