mec1308.c: Untangle successful vs failed init paths

Label mec1308_init_exit now serves as failed init path, it does
cleanup and returns 1, so it is renamed into init_err_exit.

Since all error paths return 1, and successful init is separated
from failure, there is no need to have ret variable anymore.

TEST=builds and ninja test from 51487
BUG=b:185191942

Change-Id: Ibf35335501e59636c544af124ad7a04a186790b4
Signed-off-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/52596
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

1 files changed, 16 insertions, 27 deletions

diff --git a/mec1308.c b/mec1308.c
index 682e7a96e..641f5f8fc 100644
--- a/mec1308.c
+++ b/mec1308.c
@@ -426,7 +426,6 @@ int mec1308_init(void)
 	uint16_t sio_port;
 	uint8_t device_id;
 	uint8_t tmp8;
-	int ret = 0;
 	mec1308_data_t *ctx_data = NULL;
 
 	msg_pdbg("%s(): entered\n", __func__);
@@ -437,15 +436,12 @@ int mec1308_init(void)
 		return 1;
 	}
 
-	if (check_params()) {
-		ret = 1;
-		goto mec1308_init_exit;
-	}
+	if (check_params())
+		goto init_err_exit;
 
 	if (mec1308_get_sio_index(ctx_data, &sio_port) < 0) {
 		msg_pdbg("MEC1308 not found (probe failed).\n");
-		ret = 1;
-		goto mec1308_init_exit;
+		goto init_err_exit;
 	}
 	device_id = sio_read(sio_port, MEC1308_DEVICE_ID_REG);
 	switch(device_id) {
@@ -461,8 +457,7 @@ int mec1308_init(void)
 		break;
 	default:
 		msg_pdbg("MEC1308 not found\n");
-		ret = 1;
-		goto mec1308_init_exit;
+		goto init_err_exit;
 	}
 
 	/*
@@ -486,28 +481,23 @@ int mec1308_init(void)
 	 * command to finish.*/
 	if (mbx_wait(ctx_data) != 0) {
 		msg_perr("%s: mailbox is not available\n", __func__);
-		ret = 1;
-		goto mec1308_init_exit;
+		goto init_err_exit;
 	}
 
 	/* Further setup -- disable SMI and ACPI.
 	   FIXME: is there an ordering dependency? */
 	if (mbx_write(ctx_data, MEC1308_MBX_CMD, MEC1308_CMD_ACPI_DISABLE)) {
 		msg_pdbg("%s: unable to disable ACPI\n", __func__);
-		ret = 1;
-		goto mec1308_init_exit;
+		goto init_err_exit;
 	}
 
 	if (mbx_write(ctx_data, MEC1308_MBX_CMD, MEC1308_CMD_SMI_DISABLE)) {
 		msg_pdbg("%s: unable to disable SMI\n", __func__);
-		ret = 1;
-		goto mec1308_init_exit;
+		goto init_err_exit;
 	}
 
-	if (register_shutdown(mec1308_shutdown, ctx_data)) {
-		ret = 1;
-		goto mec1308_init_exit;
-	}
+	if (register_shutdown(mec1308_shutdown, ctx_data))
+		goto init_err_exit;
 
 	/*
 	 * Enter SPI Pass-Thru Mode after commands which do not require access
@@ -516,19 +506,18 @@ int mec1308_init(void)
 	 */
 	mec1308_exit_passthru_mode(ctx_data);
 
-	if (enter_passthru_mode(ctx_data)) {
-		ret = 1;
-		goto mec1308_init_exit;
-	}
+	if (enter_passthru_mode(ctx_data))
+		goto init_err_exit;
 
 	internal_buses_supported |= BUS_LPC;	/* for LPC <--> SPI bridging */
 	spi_master_mec1308.data = ctx_data;
 	register_spi_master(&spi_master_mec1308);
 	msg_pdbg("%s(): successfully initialized mec1308\n", __func__);
 
-mec1308_init_exit:
-	if (ret)
-		free(ctx_data);
-	return ret;
+	return 0;
+
+init_err_exit:
+	free(ctx_data);
+	return 1;
 }
 #endif