media: gp8psk: initialize stats at power control logic
commit d0ac1a26ed
upstream.
As reported on:
https://lore.kernel.org/linux-media/20190627222020.45909-1-willemdebruijn.kernel@gmail.com/
if gp8psk_usb_in_op() returns an error, the status var is not
initialized. Yet, this var is used later on, in order to
identify:
- if the device was already started;
- if firmware has loaded;
- if the LNBf was powered on.
Using status = 0 seems to ensure that everything will be
properly powered up.
So, instead of the proposed solution, let's just set
status = 0.
Reported-by: syzbot <syzkaller@googlegroups.com>
Reported-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
parent
750627d36f
commit
28a29e3a65
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@ -182,7 +182,7 @@ out_rel_fw:
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static int gp8psk_power_ctrl(struct dvb_usb_device *d, int onoff)
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{
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u8 status, buf;
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u8 status = 0, buf;
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int gp_product_id = le16_to_cpu(d->udev->descriptor.idProduct);
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if (onoff) {
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