i2c: sh_mobile: define start_ch() void as it only returns 0 anyhow

After various refactoring over the years, start_ch() doesn't return
errno anymore, so make the function return void. This saves the error
handling when calling it which in turn eases cleanup of resources of a
future patch.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c
index 279d0e5..b965d52 100644 (file)
--- a/drivers/i2c/busses/i2c-sh_mobile.c
+++ b/drivers/i2c/busses/i2c-sh_mobile.c
@@ -602,8 +602,8 @@ static void sh_mobile_i2c_xfer_dma(struct sh_mobile_i2c_data *pd)
        dma_async_issue_pending(chan);
 }
 
-static int start_ch(struct sh_mobile_i2c_data *pd, struct i2c_msg *usr_msg,
-                   bool do_init)
+static void start_ch(struct sh_mobile_i2c_data *pd, struct i2c_msg *usr_msg,
+                    bool do_init)
 {
        if (do_init) {
                /* Initialize channel registers */
@@ -627,7 +627,6 @@ static int start_ch(struct sh_mobile_i2c_data *pd, struct i2c_msg *usr_msg,
 
        /* Enable all interrupts to begin with */
        iic_wr(pd, ICIC, ICIC_DTEE | ICIC_WAITE | ICIC_ALE | ICIC_TACKE);
-       return 0;
 }
 
 static int poll_dte(struct sh_mobile_i2c_data *pd)
@@ -698,9 +697,7 @@ static int sh_mobile_i2c_xfer(struct i2c_adapter *adapter,
                pd->send_stop = i == num - 1 || msg->flags & I2C_M_STOP;
                pd->stop_after_dma = false;
 
-               err = start_ch(pd, msg, do_start);
-               if (err)
-                       break;
+               start_ch(pd, msg, do_start);
 
                if (do_start)
                        i2c_op(pd, OP_START, 0);