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From: Marco Felsch <m.felsch@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH v3 02/10] of: platform: remove check of already added devices
Date: Wed, 21 Oct 2020 13:58:05 +0200	[thread overview]
Message-ID: <20201021115813.31645-3-m.felsch@pengutronix.de> (raw)
In-Reply-To: <20201021115813.31645-1-m.felsch@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@pengutronix.de>
---
Changelog:

v3:
- new patch
---
 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 */
-- 
2.20.1


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  parent reply	other threads:[~2020-10-21 11:58 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-21 11:58 [PATCH v3 00/10] Barebox Deep-Probe Marco Felsch
2020-10-21 11:58 ` [PATCH v3 01/10] imx53: remove unused imx53_add_nand Marco Felsch
2020-10-21 11:58 ` Marco Felsch [this message]
2020-10-21 11:58 ` [PATCH v3 03/10] of: platform: Keep track of populated platform devices Marco Felsch
2020-10-21 11:58 ` [PATCH v3 04/10] of: base: move memory init from DT to initcall Marco Felsch
2020-10-21 11:58 ` [PATCH v3 05/10] of: base: move clock init from of_probe() to barebox_register_of() Marco Felsch
2020-10-21 11:58 ` [PATCH v3 06/10] initcall: add of_populate_initcall Marco Felsch
2020-10-21 11:58 ` [PATCH v3 07/10] common: add initial barebox deep-probe support Marco Felsch
2020-10-22  7:23   ` Sascha Hauer
2020-10-22  7:43   ` Sascha Hauer
2020-10-21 11:58 ` [PATCH v3 08/10] ARM: i.MX: esdctl: add " Marco Felsch
2020-10-21 11:58 ` [PATCH v3 09/10] ARM: stm32mp: ddrctrl: " Marco Felsch
2020-10-21 11:58 ` [PATCH v3 10/10] ARM: boards: mx6-sabrelite: " Marco Felsch

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