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i2c: slave: print warning if slave flag not set

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Address collisions will be rare, but we should let the user know that
slaves have their own address space nonetheless.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang 2015-08-05 21:12:54 +02:00 committed by Wolfram Sang
parent cfa0327b0d
commit c6909d6f6f
1 changed files with 4 additions and 0 deletions
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4
drivers/i2c/i2c-core.c
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@ -3017,6 +3017,10 @@ int i2c_slave_register(struct i2c_client *client, i2c_slave_cb_t slave_cb)
return -EINVAL;
}
if (!(client->flags & I2C_CLIENT_SLAVE))
dev_warn(&client->dev, "%s: client slave flag not set. You might see address collisions\n",
__func__);
if (!(client->flags & I2C_CLIENT_TEN)) {
/* Enforce stricter address checking */
ret = i2c_check_7bit_addr_validity_strict(client->addr);