| Date | Mon, 23 Jan 2012 18:35:29 -0800 | From | Greg KH <> | Subject | [109/129] [media] cx23885-dvb: check if dvb_attach() succeded |
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3.2-stable review patch. If anyone has any objections, please let me know.
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From: Miroslav Slugen <thunder.mmm@gmail.com>
commit a7c8aadad39428b64d26c3971d967f8314e2397d upstream.
Fix possible null dereference for Leadtek DTV 3200H XC4000 tuner when no firmware file available.
Signed-off-by: Miroslav Slugen <thunder.mmm@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/media/video/cx23885/cx23885-dvb.c | 5 +++++ 1 file changed, 5 insertions(+)
--- 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_t 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:
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