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[media] pctv452e: don't call BUG_ON() on non-fatal error

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There are some conditions on this driver that are tested with
BUG_ON() with are not serious enough to hang a machine.

So, just return an error if this happens.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-10-07 14:15:53 -03:00
parent 73d5c5c864
commit 5dfd2c8f26
1 changed files with 4 additions and 3 deletions
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7
drivers/media/usb/dvb-usb/pctv452e.c
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@ -109,9 +109,10 @@ static int tt3650_ci_msg(struct dvb_usb_device *d, u8 cmd, u8 *data,
unsigned int rlen;
int ret;
BUG_ON(NULL == data && 0 != (write_len | read_len));
BUG_ON(write_len > 64 - 4);
BUG_ON(read_len > 64 - 4);
if (!data || (write_len > 64 - 4) || (read_len > 64 - 4)) {
err("%s: transfer data invalid", __func__);
return -EIO;
};
mutex_lock(&state->ca_mutex);
id = state->c++;