linux-kernel - [PATCH 3/7] of: fill the archdata for I2C devices

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Message-ID: <20081016171256.GC5515@oksana.dev.rtsoft.ru>
Date:	Thu, 16 Oct 2008 21:12:56 +0400
From:	Anton Vorontsov <avorontsov@...mvista.com>
To:	linux-kernel@...r.kernel.org
Cc:	David Brownell <dbrownell@...rs.sourceforge.net>,
	"Steven A. Falco" <sfalco@...ris.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Jean Delvare <khali@...ux-fr.org>,
	David Miller <davem@...emloft.net>, i2c@...sensors.org,
	linuxppc-dev@...abs.org
Subject: [PATCH 3/7] of: fill the archdata for I2C devices

For I2C devices we just setting the the node pointer in the archdata.
This is needed so that the other code would know device's node.

Signed-off-by: Anton Vorontsov <avorontsov@...mvista.com>
---
 drivers/of/of_i2c.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/drivers/of/of_i2c.c b/drivers/of/of_i2c.c
index 6a98dc8..f9e18ed 100644
--- a/drivers/of/of_i2c.c
+++ b/drivers/of/of_i2c.c
@@ -24,6 +24,7 @@ void of_register_i2c_devices(struct i2c_adapter *adap,
 
 	for_each_child_of_node(adap_node, node) {
 		struct i2c_board_info info = {};
+		struct dev_archdata dev_ad = {};
 		const u32 *addr;
 		int len;
 
@@ -41,6 +42,9 @@ void of_register_i2c_devices(struct i2c_adapter *adap,
 
 		info.addr = *addr;
 
+		dev_archdata_set_node(&dev_ad, node);
+		info.archdata = &dev_ad;
+
 		request_module(info.type);
 
 		result = i2c_new_device(adap, &info);
@@ -51,6 +55,13 @@ void of_register_i2c_devices(struct i2c_adapter *adap,
 			irq_dispose_mapping(info.irq);
 			continue;
 		}
+
+		/*
+		 * Get the node to not lose the dev_archdata->of_node.
+		 * Currently there is no way to put it back, as well as no
+		 * of_unregister_i2c_devices() call.
+		 */
+		of_node_get(node);
 	}
 }
 EXPORT_SYMBOL(of_register_i2c_devices);
-- 
1.5.6.3

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