linux-kernel - [PATCH] staging: comedi: introduce 'comedi_get

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Message-ID: <201204271149.49035.hartleys@visionengravers.com>
Date:	Fri, 27 Apr 2012 11:49:48 -0700
From:	H Hartley Sweeten <hartleys@...ionengravers.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
CC:	<devel@...verdev.osuosl.org>, <abbotti@....co.uk>,
	<fmhess@...rs.sourceforge.net>, <gregkh@...uxfoundation.org>
Subject: [PATCH] staging: comedi: introduce 'comedi_get_board' helper function

This helper function is used to fetch the comedi_device board_ptr
which is used during the attach to pass board specific information
to the comedi drivers.

Signed-off-by: H Hartley Sweeten <hsweeten@...ionengravers.com>
Cc: Ian Abbott <abbotti@....co.uk>
Cc: Mori Hess <fmhess@...rs.sourceforge.net>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---

With this helper removing all the 'this_board' defines in the drivers
will be easier (and cleaner).

diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h
index 300fd84..53a05dd 100644
--- a/drivers/staging/comedi/comedidev.h
+++ b/drivers/staging/comedi/comedidev.h
@@ -235,6 +235,11 @@ struct comedi_device {
 	void (*close) (struct comedi_device *dev);
 };
 
+static inline const void *comedi_get_board(struct comedi_device *dev)
+{
+	return dev->board_ptr;
+}
+
 struct comedi_device_file_info {
 	struct comedi_device *device;
 	struct comedi_subdevice *read_subdevice;
--
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