[PATCH v3 1/5] i3c: master: Move rstdaa error suppression

[Jorge Marques]

Prepare to fix improper Mx positive error propagation in later
commits by handling Mx error codes where the i3c_ccc_cmd command
is allocated. Two of the four i3c_master_rstdaa_locked() are error
paths that already suppressed the return value, the remaining two
are changed to handle the I3C_ERROR_M2 Mx error code inside
i3c_master_rstdaa_locked(), checking cmd->err directly.

Reviewed-by: Frank Li <Frank.Li@xxxxxxx>
Reviewed-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Signed-off-by: Jorge Marques <jorge.marques@xxxxxxxxxx>
---
 drivers/i3c/master.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 9e6be49bebb2c..7f4630ac8f0bc 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -1016,6 +1016,10 @@ static int i3c_master_rstdaa_locked(struct i3c_master_controller *master,
 	ret = i3c_master_send_ccc_cmd_locked(master, &cmd);
 	i3c_ccc_cmd_dest_cleanup(&dest);
 
+	/* No active devices on the bus. */
+	if (ret && cmd.err == I3C_ERROR_M2)
+		ret = 0;
+
 	return ret;
 }
 
@@ -1794,11 +1798,8 @@ int i3c_master_do_daa_ext(struct i3c_master_controller *master, bool rstdaa)
 
 	i3c_bus_maintenance_lock(&master->bus);
 
-	if (rstdaa) {
+	if (rstdaa)
 		rstret = i3c_master_rstdaa_locked(master, I3C_BROADCAST_ADDR);
-		if (rstret == I3C_ERROR_M2)
-			rstret = 0;
-	}
 
 	ret = master->ops->do_daa(master);
 
@@ -2093,7 +2094,7 @@ static int i3c_master_bus_init(struct i3c_master_controller *master)
 	 * (assigned by the bootloader for example).
 	 */
 	ret = i3c_master_rstdaa_locked(master, I3C_BROADCAST_ADDR);
-	if (ret && ret != I3C_ERROR_M2)
+	if (ret)
 		goto err_bus_cleanup;
 
 	if (master->ops->set_speed) {

-- 
2.51.1