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authorWolfram Sang <wsa@the-dreams.de>2018-01-18 15:11:33 +0300
committerWolfram Sang <wsa@the-dreams.de>2018-02-26 22:40:46 +0300
commita1671af2863376abb9f200c5db3c9097c0490e87 (patch)
tree122a96379e61b616c1ee2705c6d35b26887f9652 /drivers/i2c/i2c-core-of.c
parent4f3ae38acb3c93cbd8aab9a9fb76d5f661ab578d (diff)
downloadlinux-a1671af2863376abb9f200c5db3c9097c0490e87.tar.xz
i2c: of: simplify reading the "reg" property
of_get_property() is a bit cumbersome to use. Replace it with the newer of_property_read_u32() for more readable code. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/i2c-core-of.c')
-rw-r--r--drivers/i2c/i2c-core-of.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c
index bbfff3f61b1f..c405270a98b4 100644
--- a/drivers/i2c/i2c-core-of.c
+++ b/drivers/i2c/i2c-core-of.c
@@ -4,7 +4,7 @@
* Copyright (C) 2008 Jochen Friedrich <jochen@scram.de>
* based on a previous patch from Jon Smirl <jonsmirl@gmail.com>
*
- * Copyright (C) 2013 Wolfram Sang <wsa@the-dreams.de>
+ * Copyright (C) 2013, 2018 Wolfram Sang <wsa@the-dreams.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
@@ -28,9 +28,8 @@ static struct i2c_client *of_i2c_register_device(struct i2c_adapter *adap,
struct i2c_client *client;
struct i2c_board_info info = {};
struct dev_archdata dev_ad = {};
- const __be32 *addr_be;
u32 addr;
- int len;
+ int ret;
dev_dbg(&adap->dev, "of_i2c: register %pOF\n", node);
@@ -40,13 +39,12 @@ static struct i2c_client *of_i2c_register_device(struct i2c_adapter *adap,
return ERR_PTR(-EINVAL);
}
- addr_be = of_get_property(node, "reg", &len);
- if (!addr_be || (len < sizeof(*addr_be))) {
+ ret = of_property_read_u32(node, "reg", &addr);
+ if (ret) {
dev_err(&adap->dev, "of_i2c: invalid reg on %pOF\n", node);
- return ERR_PTR(-EINVAL);
+ return ERR_PTR(ret);
}
- addr = be32_to_cpup(addr_be);
if (addr & I2C_TEN_BIT_ADDRESS) {
addr &= ~I2C_TEN_BIT_ADDRESS;
info.flags |= I2C_CLIENT_TEN;