From f597f2a8fce27b067ed5ad58314bdfbb219d2ffe Mon Sep 17 00:00:00 2001 From: Daniel Scheller Date: Sat, 12 Aug 2017 07:55:56 -0400 Subject: [PATCH] media: ddbridge: only register frontends in fe2 if fe is not NULL Smatch reported: drivers/media/pci/ddbridge/ddbridge-core.c:1602 dvb_input_attach() error: we previously assumed 'dvb->fe' could be null (see line 1595) dvb->fe2 will ever only be populated when dvb->fe is set. So only handle registration of dvb->fe2 when dvb->fe got set beforehand by moving the registration into the "if (dvb->fe)" conditional. Cc: Ralph Metzler Signed-off-by: Daniel Scheller Tested-by: Richard Scobie Tested-by: Jasmin Jessich Tested-by: Dietmar Spingler Tested-by: Manfred Knick Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/ddbridge/ddbridge-core.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/drivers/media/pci/ddbridge/ddbridge-core.c b/drivers/media/pci/ddbridge/ddbridge-core.c index d7bf01f38d98..759a53e82252 100644 --- a/drivers/media/pci/ddbridge/ddbridge-core.c +++ b/drivers/media/pci/ddbridge/ddbridge-core.c @@ -1506,23 +1506,25 @@ static int dvb_input_attach(struct ddb_input *input) return 0; } dvb->attached = 0x30; + if (dvb->fe) { if (dvb_register_frontend(adap, dvb->fe) < 0) return -ENODEV; + + if (dvb->fe2) { + if (dvb_register_frontend(adap, dvb->fe2) < 0) + return -ENODEV; + dvb->fe2->tuner_priv = dvb->fe->tuner_priv; + memcpy(&dvb->fe2->ops.tuner_ops, + &dvb->fe->ops.tuner_ops, + sizeof(struct dvb_tuner_ops)); + } } - if (dvb->fe2) { - if (dvb_register_frontend(adap, dvb->fe2) < 0) - return -ENODEV; - dvb->fe2->tuner_priv = dvb->fe->tuner_priv; - memcpy(&dvb->fe2->ops.tuner_ops, - &dvb->fe->ops.tuner_ops, - sizeof(struct dvb_tuner_ops)); - } + dvb->attached = 0x31; return 0; } - static int port_has_encti(struct ddb_port *port) { struct device *dev = port->dev->dev; -- 2.30.2