Commit c086f282 authored Oct 18, 2005 by Ben Dooks Committed by Russell King Oct 18, 2005

[ARM] 3018/1: S3C2410 - check de-referenced device is really a platform device



Patch from Ben Dooks

Check that the device we are looking at is really
a platform device before trying to cast it to one
to find out the platform bus number.

Thanks to RMK for pointing this out.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

parent 39ca371c

arch/arm/mach-s3c2410/clock.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -98,7 +98,10 @@ struct clk clk_get(struct device dev, const char *id)
		struct clk *clk = ERR_PTR(-ENOENT);
		int idno;

		idno = (dev == NULL) ? -1 : to_platform_device(dev)->id;
		if (dev == NULL \|\| dev->bus != &platform_bus_type)
		idno = -1;
		else
		idno = to_platform_device(dev)->id;

		down(&clocks_sem);