HSI: omap_ssi_port: ensure clocks are kept enabled during transfer

ensure, that clocks remain enabled, when a transfer is started.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Pavel Machek <pavel@ucw.cz>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/hsi/controllers/omap_ssi_port.c b/drivers/hsi/controllers/omap_ssi_port.c
index aef5a8666d48..f91c6a4bb1a5 100644
--- a/drivers/hsi/controllers/omap_ssi_port.c
+++ b/drivers/hsi/controllers/omap_ssi_port.c
@@ -645,6 +645,7 @@ static void ssi_transfer(struct omap_ssi_port *omap_port,
         struct hsi_msg *msg;
         int err = -1;
 
+        pm_runtime_get(omap_port->pdev);
         spin_lock_bh(&omap_port->lock);
         while (err < 0) {
                 err = ssi_start_transfer(queue);
@@ -659,6 +660,7 @@ static void ssi_transfer(struct omap_ssi_port *omap_port,
                 }
         }
         spin_unlock_bh(&omap_port->lock);
+        pm_runtime_put(omap_port->pdev);
 }
 
 static void ssi_cleanup_queues(struct hsi_client *cl)