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check for error during write

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This commit is contained in:
Ralph Metzler 2017-07-24 22:24:13 +02:00
parent fd21584ecc
commit 862c7bfc60
1 changed files with 7 additions and 3 deletions
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10
frontends/cxd2099.c
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@ -662,15 +662,19 @@ static int read_data(struct dvb_ca_en50221 *ca, int slot, u8 *ebuf, int ecount)
static int write_data(struct dvb_ca_en50221 *ca, int slot, u8 *ebuf, int ecount)
{
struct cxd *ci = ca->data;
int status;
if (ci->write_busy)
return -EAGAIN;
mutex_lock(&ci->lock);
write_reg(ci, 0x0d, ecount >> 8);
write_reg(ci, 0x0e, ecount & 0xff);
write_block(ci, 0x11, ebuf, ecount);
ci->write_busy = 1;
status = write_block(ci, 0x11, ebuf, ecount);
if (!status)
ci->write_busy = 1;
mutex_unlock(&ci->lock);
if (status)
return status;
return ecount;
}
#endif