diff options
| author | Antti Palosaari <crope@iki.fi> | 2012-08-10 02:00:51 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-09-27 21:23:10 +0400 |
| commit | 48caa6f12902dfc08acfc54e417f845dc0477664 (patch) | |
| tree | 2667606ae2c2633df3f4d3f7b7b1a3e6d3e68439 /drivers/media/dvb-core | |
| parent | 3c16b2b330e33392ad5dbd98e64bab659259daa4 (diff) | |
| download | linux-48caa6f12902dfc08acfc54e417f845dc0477664.tar.xz | |
[media] dvb_frontend: do not allow statistic IOCTLs when sleeping
Demodulator cannot perform statistic IOCTLs when it is not tuned.
Return -EAGAIN in such case.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb-core')
| -rw-r--r-- | drivers/media/dvb-core/dvb_frontend.c | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index 479a5e52cb0d..1f3b16db2036 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -2131,27 +2131,43 @@ static int dvb_frontend_ioctl_legacy(struct file *file, err = fe->ops.read_status(fe, status); break; } + case FE_READ_BER: - if (fe->ops.read_ber) - err = fe->ops.read_ber(fe, (__u32*) parg); + if (fe->ops.read_ber) { + if (fepriv->thread) + err = fe->ops.read_ber(fe, (__u32 *) parg); + else + err = -EAGAIN; + } break; case FE_READ_SIGNAL_STRENGTH: - if (fe->ops.read_signal_strength) - err = fe->ops.read_signal_strength(fe, (__u16*) parg); + if (fe->ops.read_signal_strength) { + if (fepriv->thread) + err = fe->ops.read_signal_strength(fe, (__u16 *) parg); + else + err = -EAGAIN; + } break; case FE_READ_SNR: - if (fe->ops.read_snr) - err = fe->ops.read_snr(fe, (__u16*) parg); + if (fe->ops.read_snr) { + if (fepriv->thread) + err = fe->ops.read_snr(fe, (__u16 *) parg); + else + err = -EAGAIN; + } break; case FE_READ_UNCORRECTED_BLOCKS: - if (fe->ops.read_ucblocks) - err = fe->ops.read_ucblocks(fe, (__u32*) parg); + if (fe->ops.read_ucblocks) { + if (fepriv->thread) + err = fe->ops.read_ucblocks(fe, (__u32 *) parg); + else + err = -EAGAIN; + } break; - case FE_DISEQC_RESET_OVERLOAD: if (fe->ops.diseqc_reset_overload) { err = fe->ops.diseqc_reset_overload(fe); |