diff options
Diffstat (limited to 'drivers/media/dvb/bt8xx/dst_ca.c')
| -rw-r--r-- | drivers/media/dvb/bt8xx/dst_ca.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/media/dvb/bt8xx/dst_ca.c b/drivers/media/dvb/bt8xx/dst_ca.c index 38c728945bf..e6541aff399 100644 --- a/drivers/media/dvb/bt8xx/dst_ca.c +++ b/drivers/media/dvb/bt8xx/dst_ca.c @@ -81,36 +81,41 @@ static int dst_ci_command(struct dst_state* state, u8 * data, u8 *ca_string, u8 { u8 reply; + down(&state->dst_mutex); dst_comm_init(state); msleep(65); if (write_dst(state, data, len)) { dprintk(verbose, DST_CA_INFO, 1, " Write not successful, trying to recover"); dst_error_recovery(state); - return -1; + goto error; } if ((dst_pio_disable(state)) < 0) { dprintk(verbose, DST_CA_ERROR, 1, " DST PIO disable failed."); - return -1; + goto error; } if (read_dst(state, &reply, GET_ACK) < 0) { dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover"); dst_error_recovery(state); - return -1; + goto error; } if (read) { if (! dst_wait_dst_ready(state, LONG_DELAY)) { dprintk(verbose, DST_CA_NOTICE, 1, " 8820 not ready"); - return -1; + goto error; } if (read_dst(state, ca_string, 128) < 0) { /* Try to make this dynamic */ dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover"); dst_error_recovery(state); - return -1; + goto error; } } - + up(&state->dst_mutex); return 0; + +error: + up(&state->dst_mutex); + return -EIO; } |