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authorGrant Likely <grant.likely@secretlab.ca>2010-06-08 07:48:17 -0600
committerGrant Likely <grant.likely@secretlab.ca>2010-07-05 16:14:51 -0600
commit8cec0e7b4c7c0b76f2b5285f250211ad81c3eafd (patch)
tree84d3988600e37906d8e9972ad8ae31a0ea4684cf /drivers/of
parent2e13cba8dc35774bf1d7169733e876c5b7adee54 (diff)
downloadlinux-8cec0e7b4c7c0b76f2b5285f250211ad81c3eafd.tar.bz2
of/device: Add OF style matching helper function
Add of_driver_match_device() helper function. This function can be used by bus types to determine if a driver works with a device when using OF style matching. If CONFIG_OF is unselected, then it is a nop. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> CC: Greg Kroah-Hartman <gregkh@suse.de> CC: Michal Simek <monstr@monstr.eu> CC: Grant Likely <grant.likely@secretlab.ca> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Stephen Rothwell <sfr@canb.auug.org.au> CC: linux-kernel@vger.kernel.org CC: microblaze-uclinux@itee.uq.edu.au CC: linuxppc-dev@ozlabs.org CC: devicetree-discuss@lists.ozlabs.org
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/device.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/of/device.c b/drivers/of/device.c
index c2a98f5ca80d..5282a202f5a9 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -20,7 +20,7 @@
const struct of_device_id *of_match_device(const struct of_device_id *matches,
const struct device *dev)
{
- if (!dev->of_node)
+ if ((!matches) || (!dev->of_node))
return NULL;
return of_match_node(matches, dev->of_node);
}