i2c: rename wait_for_completion callback to wait_for_completion_cb

Functionally no change. Remove the ambiguity of 'wait_for_completion'.
It helps development of the DEPT dependency tracker, but seems favorable
in any case.

Signed-off-by: Byungchul Park <byungchul@sk.com>
[wsa: reworded commit message]
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Author: Byungchul Park

drivers/i2c/algos/i2c-algo-pca.c

@@ -30,7 +30,7 @@ static int i2c_debug;
 #define pca_clock(adap) adap->i2c_clock
 #define pca_set_con(adap, val) pca_outw(adap, I2C_PCA_CON, val)
 #define pca_get_con(adap) pca_inw(adap, I2C_PCA_CON)
-#define pca_wait(adap) adap->wait_for_completion(adap->data)
+#define pca_wait(adap) adap->wait_for_completion_cb(adap->data)
 
 static void pca_reset(struct i2c_algo_pca_data *adap)
 {

drivers/i2c/busses/i2c-pca-isa.c

@@ -95,7 +95,7 @@ static struct i2c_algo_pca_data pca_isa_data = {
 	/* .data intentionally left NULL, not needed with ISA */
 	.write_byte		= pca_isa_writebyte,
 	.read_byte		= pca_isa_readbyte,
-	.wait_for_completion	= pca_isa_waitforcompletion,
+	.wait_for_completion_cb	= pca_isa_waitforcompletion,
 	.reset_chip		= pca_isa_resetchip,
 };
 

drivers/i2c/busses/i2c-pca-platform.c

@@ -180,7 +180,7 @@ static int i2c_pca_pf_probe(struct platform_device *pdev)
 	}
 
 	i2c->algo_data.data = i2c;
-	i2c->algo_data.wait_for_completion = i2c_pca_pf_waitforcompletion;
+	i2c->algo_data.wait_for_completion_cb = i2c_pca_pf_waitforcompletion;
 	if (i2c->gpio)
 		i2c->algo_data.reset_chip = i2c_pca_pf_resetchip;
 	else

include/linux/i2c-algo-pca.h

@@ -71,7 +71,7 @@ struct i2c_algo_pca_data {
 	void 				*data;	/* private low level data */
 	void (*write_byte)		(void *data, int reg, int val);
 	int  (*read_byte)		(void *data, int reg);
-	int  (*wait_for_completion)	(void *data);
+	int  (*wait_for_completion_cb)	(void *data);
 	void (*reset_chip)		(void *data);
 	/* For PCA9564, use one of the predefined frequencies:
 	 * 330000, 288000, 217000, 146000, 88000, 59000, 44000, 36000