linux-kernel - [PATCH] rpmsg: core: Make remove handler for rpmsg driver optional.

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Date:   Mon,  7 Jan 2019 19:38:32 +0800
From:   Pi-Hsun Shih <pihsun@...omium.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Pi-Hsun Shih <pihsun@...omium.org>,
        Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-remoteproc@...r.kernel.org (open list:REMOTE PROCESSOR MESSAGING
        (RPMSG) SUBSYSTEM), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] rpmsg: core: Make remove handler for rpmsg driver optional.

Most other bus (for example, SPI, i2c) have the remove handler for
driver optional. Make remove handler for rpmsg driver optional too.

Signed-off-by: Pi-Hsun Shih <pihsun@...omium.org>
---
 drivers/rpmsg/rpmsg_core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
index 8122807db38094..ea88fd4e2a6ecf 100644
--- a/drivers/rpmsg/rpmsg_core.c
+++ b/drivers/rpmsg/rpmsg_core.c
@@ -493,7 +493,8 @@ static int rpmsg_dev_remove(struct device *dev)
 	if (rpdev->ops->announce_destroy)
 		err = rpdev->ops->announce_destroy(rpdev);
 
-	rpdrv->remove(rpdev);
+	if (rpdrv->remove)
+		rpdrv->remove(rpdev);
 
 	dev_pm_domain_detach(dev, true);
 
-- 
2.20.1.97.g81188d93c3-goog