From 60dfee83be0262141968a4ee6b48786bc5767073 Mon Sep 17 00:00:00 2001 From: Miroslav Slugen Date: Sun, 11 Dec 2011 18:57:58 -0300 Subject: [PATCH] cx23885-dvb: check if dvb_attach() succeded commit a7c8aadad39428b64d26c3971d967f8314e2397d upstream. Fix possible null dereference for Leadtek DTV 3200H XC4000 tuner when no firmware file available. Signed-off-by: Miroslav Slugen Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman --- drivers/media/video/cx23885/cx23885-dvb.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/media/video/cx23885/cx23885-dvb.c b/drivers/media/video/cx23885/cx23885-dvb.c index bcb45be44bb2..f0482b2d50f1 100644 --- a/drivers/media/video/cx23885/cx23885-dvb.c +++ b/drivers/media/video/cx23885/cx23885-dvb.c @@ -940,6 +940,11 @@ static int dvb_register(struct cx23885_tsport *port) fe = dvb_attach(xc4000_attach, fe0->dvb.frontend, &dev->i2c_bus[1].i2c_adap, &cfg); + if (!fe) { + printk(KERN_ERR "%s/2: xc4000 attach failed\n", + dev->name); + goto frontend_detach; + } } break; case CX23885_BOARD_TBS_6920: -- 2.39.5