linux-kernel - [PATCH] tc: account for device

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Date:	Fri, 15 Nov 2013 16:27:26 +0100
From:	Levente Kurusa <levex@...ux.com>
To:	"Maciej W. Rozycki" <macro@...ux-mips.org>
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] tc: account for device_register() failure

This patch makes the TURBOchannel driver bail out if the call
to device_register() failed.

Signed-off-by: Levente Kurusa <levex@...ux.com>
---
 tc.c |   10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/tc/tc.c b/drivers/tc/tc.c
index a8aaf6a..6b3a038 100644
--- a/drivers/tc/tc.c
+++ b/drivers/tc/tc.c
@@ -129,7 +129,10 @@ static void __init tc_bus_add_devices(struct tc_bus *tbus)

 		tc_device_get_irq(tdev);

-		device_register(&tdev->dev);
+		if (device_register(&tdev->dev)) {
+			put_device(&tdev->dev);
+			goto out_err;
+		}
 		list_add_tail(&tdev->node, &tbus->devices);

 out_err:
@@ -148,7 +151,10 @@ static int __init tc_init(void)

 	INIT_LIST_HEAD(&tc_bus.devices);
 	dev_set_name(&tc_bus.dev, "tc");
-	device_register(&tc_bus.dev);
+	if (device_register(&tc_bus.dev)) {
+		put_device(&tc_bus.dev);
+		return 0;	
+	}

 	if (tc_bus.info.slot_size) {
 		unsigned int tc_clock = tc_get_speed(&tc_bus) / 100000;
--
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