linux-kernel - [PATCH v4 2/2] remoteproc: enhance rproc

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Date: Wed, 3 Jan 2024 14:11:25 -0800
From: Tanmay Shah <tanmay.shah@....com>
To: <andersson@...nel.org>, <mathieu.poirier@...aro.org>
CC: <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	"Tanmay Shah" <tanmay.shah@....com>, Tarak Reddy <tarak.reddy@....com>
Subject: [PATCH v4 2/2] remoteproc: enhance rproc_put() for clusters

This patch enhances rproc_put() to support remoteproc clusters
with multiple child nodes as in rproc_get_by_phandle().

Signed-off-by: Tarak Reddy <tarak.reddy@....com>
Signed-off-by: Tanmay Shah <tanmay.shah@....com>
---
 drivers/remoteproc/remoteproc_core.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 0b3b34085e2f..f276956f2c5c 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -2554,7 +2554,11 @@ EXPORT_SYMBOL(rproc_free);
  */
 void rproc_put(struct rproc *rproc)
 {
-	module_put(rproc->dev.parent->driver->owner);
+	if (rproc->dev.parent->driver)
+		module_put(rproc->dev.parent->driver->owner);
+	else
+		module_put(rproc->dev.parent->parent->driver->owner);
+
 	put_device(&rproc->dev);
 }
 EXPORT_SYMBOL(rproc_put);
-- 
2.25.1