i3c: master: Fix missing 'ret' assignment in set_speed()

commit b266e0d4dac00eecdfaf50ec3f708fd0c3b39637 upstream.

Fix a probe failure in the i3c master driver that occurs when no i3c
devices are connected to the bus.

The issue arises in `i3c_master_bus_init()` where the `ret` value is not
updated after calling `master->ops->set_speed()`. If no devices are
present, `ret` remains set to `I3C_ERROR_M2`, causing the code to
incorrectly proceed to `err_bus_cleanup`.

Cc: stable@vger.kernel.org
Fixes: aef79e189ba2 ("i3c: master: support to adjust first broadcast address speed")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Mukesh Kumar Savaliya <quic_msavaliy@quicinc.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20250108225533.915334-1-Frank.Li@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index bbefac0dbf36d6527a766b017e3774f45eea96b2..7bb005de974e26b8909713f8bb09b017b29ede4a 100644 (file)
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -1861,7 +1861,7 @@ static int i3c_master_bus_init(struct i3c_master_controller *master)
                goto err_bus_cleanup;
 
        if (master->ops->set_speed) {
-               master->ops->set_speed(master, I3C_OPEN_DRAIN_NORMAL_SPEED);
+               ret = master->ops->set_speed(master, I3C_OPEN_DRAIN_NORMAL_SPEED);
                if (ret)
                        goto err_bus_cleanup;
        }