linux-kernel - [PATCH 3.10 162/268] bcma: use (get|put)_device when probing/removing device driver

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Message-Id: <1497897167-14556-163-git-send-email-w@1wt.eu>
Date:   Mon, 19 Jun 2017 20:31:01 +0200
From:   Willy Tarreau <w@....eu>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        linux@...ck-us.net
Cc:     Rafał Miłecki <rafal@...ecki.pl>,
        Kalle Valo <kvalo@...eaurora.org>, Willy Tarreau <w@....eu>
Subject: [PATCH 3.10 162/268] bcma: use (get|put)_device when probing/removing device driver

From: Rafał Miłecki <rafal@...ecki.pl>

commit a971df0b9d04674e325346c17de9a895425ca5e1 upstream.

This allows tracking device state and e.g. makes devm work as expected.

Signed-off-by: Rafał Miłecki <rafal@...ecki.pl>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Signed-off-by: Willy Tarreau <w@....eu>
---
 drivers/bcma/main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c
index f72f52b..65e3687 100644
--- a/drivers/bcma/main.c
+++ b/drivers/bcma/main.c
@@ -432,8 +432,11 @@ static int bcma_device_probe(struct device *dev)
 					       drv);
 	int err = 0;
 
+	get_device(dev);
 	if (adrv->probe)
 		err = adrv->probe(core);
+	if (err)
+		put_device(dev);
 
 	return err;
 }
@@ -446,6 +449,7 @@ static int bcma_device_remove(struct device *dev)
 
 	if (adrv->remove)
 		adrv->remove(core);
+	put_device(dev);
 
 	return 0;
 }
-- 
2.8.0.rc2.1.gbe9624a