[PATCH 02/19] of: platform: remove check of already added devices

[Sascha Hauer]

From: Marco Felsch <m.felsch at pengutronix.de>

This check is a relict of the early barebox device tree days, where
devices were added by machine and/or board code too. The check ensured
too not populate the same device twice. Nowadays _real_ hardware devices
(devices with hardware resources) which are not auto enumerable should
only be added using the device tree. Remove the check to cleanup the
code and to remove looping over each device every time
of_platform_device_create() is called instead of keeping it for legacy
boards/machines. Those legacy boards/machines should be converted
instead.

Signed-off-by: Marco Felsch <m.felsch at pengutronix.de>
Link: https://lore.pengutronix.de/20201021115813.31645-3-m.felsch@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/of/platform.c | 31 +------------------------------
 1 file changed, 1 insertion(+), 30 deletions(-)

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 21c7cce1a5..51781798c6 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -101,7 +101,7 @@ struct device_d *of_platform_device_create(struct device_node *np,
 	struct device_d *dev;
 	struct resource *res = NULL, temp_res;
 	resource_size_t resinval;
-	int i, j, ret, num_reg = 0, match;
+	int i, ret, num_reg = 0;
 
 	if (!of_device_is_available(np))
 		return NULL;
@@ -121,35 +121,6 @@ struct device_d *of_platform_device_create(struct device_node *np,
 				return NULL;
 			}
 		}
-
-		/*
-		 * A device may already be registered as platform_device.
-		 * Instead of registering the same device again, just
-		 * add this node to the existing device.
-		 */
-		for_each_device(dev) {
-			if (!dev->resource)
-				continue;
-
-			for (i = 0, match = 0; i < num_reg; i++)
-				for (j = 0; j < dev->num_resources; j++)
-					if (dev->resource[j].start ==
-						res[i].start &&
-					    dev->resource[j].end ==
-						res[i].end) {
-						match++;
-						break;
-					}
-
-			/* check if all address resources match */
-			if (match == num_reg) {
-				debug("connecting %s to %s\n",
-					np->name, dev_name(dev));
-				dev->device_node = np;
-				free(res);
-				return dev;
-			}
-		}
 	}
 
 	/* setup generic device info */
-- 
2.29.2