[PATCH AUTOSEL 4.4 30/43] media: tm6000: add error handling for dvb_register_adapter

[Sasha Levin]

From: Zhouyang Jia <jiazhouyan...@gmail.com>

[ Upstream commit e95d7c6eb94c634852eaa5ff4caf3db05b5d2e86 ]

When dvb_register_adapter fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling dvb_register_adapter.

Signed-off-by: Zhouyang Jia <jiazhouyan...@gmail.com>
[hans.verk...@cisco.com: use pr_err and fix typo: adater -> adapter]
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+sams...@kernel.org>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
---
 drivers/media/usb/tm6000/tm6000-dvb.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/usb/tm6000/tm6000-dvb.c 
b/drivers/media/usb/tm6000/tm6000-dvb.c
index 095f5db1a790..4f317e2686e9 100644
--- a/drivers/media/usb/tm6000/tm6000-dvb.c
+++ b/drivers/media/usb/tm6000/tm6000-dvb.c
@@ -275,6 +275,11 @@ static int register_dvb(struct tm6000_core *dev)
 
        ret = dvb_register_adapter(&dvb->adapter, "Trident TVMaster 6000 DVB-T",
                                        THIS_MODULE, &dev->udev->dev, 
adapter_nr);
+       if (ret < 0) {
+               pr_err("tm6000: couldn't register the adapter!\n");
+               goto err;
+       }
+
        dvb->adapter.priv = dev;
 
        if (dvb->frontend) {
-- 
2.17.1