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authorSuzuki K Poulose <suzuki.poulose@arm.com>2019-07-23 23:18:34 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-07-30 13:07:42 +0200
commit67843bbaf36eb087714f40e783ee78e99e9e4b86 (patch)
treecd2b2839bd3510dfd05d2185346a57988fb93c8a /drivers/hwtracing
parentcfba5de9b99f8bbb8b4ea11b3049784e78b8759b (diff)
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drivers: Introduce device lookup variants by fwnode
Add a helper to match the firmware node handle of a device and provide wrappers for {bus/class/driver}_find_device() APIs to avoid proliferation of duplicate custom match functions. Cc: "David S. Miller" <davem@davemloft.net> Cc: Doug Ledford <dledford@redhat.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: linux-usb@vger.kernel.org Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Joe Perches <joe@perches.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Joerg Roedel <joro@8bytes.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Acked-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20190723221838.12024-4-suzuki.poulose@arm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing')
-rw-r--r--drivers/hwtracing/coresight/coresight-platform.c11
-rw-r--r--drivers/hwtracing/coresight/coresight-priv.h2
-rw-r--r--drivers/hwtracing/coresight/coresight.c4
3 files changed, 3 insertions, 14 deletions
diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c
index dad7d96c5943..3c5bee429105 100644
--- a/drivers/hwtracing/coresight/coresight-platform.c
+++ b/drivers/hwtracing/coresight/coresight-platform.c
@@ -37,11 +37,6 @@ static int coresight_alloc_conns(struct device *dev,
return 0;
}
-int coresight_device_fwnode_match(struct device *dev, const void *fwnode)
-{
- return dev_fwnode(dev) == fwnode;
-}
-
static struct device *
coresight_find_device_by_fwnode(struct fwnode_handle *fwnode)
{
@@ -51,8 +46,7 @@ coresight_find_device_by_fwnode(struct fwnode_handle *fwnode)
* If we have a non-configurable replicator, it will be found on the
* platform bus.
*/
- dev = bus_find_device(&platform_bus_type, NULL,
- fwnode, coresight_device_fwnode_match);
+ dev = bus_find_device_by_fwnode(&platform_bus_type, fwnode);
if (dev)
return dev;
@@ -60,8 +54,7 @@ coresight_find_device_by_fwnode(struct fwnode_handle *fwnode)
* We have a configurable component - circle through the AMBA bus
* looking for the device that matches the endpoint node.
*/
- return bus_find_device(&amba_bustype, NULL,
- fwnode, coresight_device_fwnode_match);
+ return bus_find_device_by_fwnode(&amba_bustype, fwnode);
}
#ifdef CONFIG_OF
diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h
index 7d401790dd7e..61d7f9ff054d 100644
--- a/drivers/hwtracing/coresight/coresight-priv.h
+++ b/drivers/hwtracing/coresight/coresight-priv.h
@@ -202,6 +202,4 @@ static inline void *coresight_get_uci_data(const struct amba_id *id)
void coresight_release_platform_data(struct coresight_platform_data *pdata);
-int coresight_device_fwnode_match(struct device *dev, const void *fwnode);
-
#endif
diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
index 55db77f6410b..6453c67a4d01 100644
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -1046,9 +1046,7 @@ static void coresight_fixup_device_conns(struct coresight_device *csdev)
struct coresight_connection *conn = &csdev->pdata->conns[i];
struct device *dev = NULL;
- dev = bus_find_device(&coresight_bustype, NULL,
- (void *)conn->child_fwnode,
- coresight_device_fwnode_match);
+ dev = bus_find_device_by_fwnode(&coresight_bustype, conn->child_fwnode);
if (dev) {
conn->child_dev = to_coresight_device(dev);
/* and put reference from 'bus_find_device()' */