On 03/06/2019 20:12, Greg KH wrote:
On Mon, Jun 03, 2019 at 04:50:12PM +0100, Suzuki K Poulose wrote:
Add a wrappers to lookup a device by name for a given driver, by various
generic properties of a device. This can avoid the proliferation of custom
match functions throughout the drivers.

Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <raf...@kernel.org>
Signed-off-by: Suzuki K Poulose <suzuki.poul...@arm.com>
---
  include/linux/device.h | 44 ++++++++++++++++++++++++++++++++++++++++++++
  1 file changed, 44 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index 52d59d5..68d6e04 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -401,6 +401,50 @@ struct device *driver_find_device(struct device_driver 
*drv,
                                  struct device *start, void *data,
                                  int (*match)(struct device *dev, const void 
*data));
+/**
+ * driver_find_device_by_name - device iterator for locating a particular 
device
+ * of a specific name.
+ * @driver: the driver we're iterating
+ * @start: Device to begin with
+ * @name: name of the device to match
+ */
+static inline struct device *driver_find_device_by_name(struct device_driver 
*drv,
+                                                       struct device *start,
+                                                       const char *name)
+{
+       return driver_find_device(drv, start, (void *)name, device_match_name);
+}

Are any of the users you are finding for these new functions ever using
the 'start' parameter?  If not, let's just drop it, as it's normally a
rare thing to care about, right?

No, they don't except for the bus_find_next_device() at the end of the series.
I could clean this up.

Cheers
Suzuki

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