From 48caa6f12902dfc08acfc54e417f845dc0477664 Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Thu, 9 Aug 2012 19:00:51 -0300 Subject: [PATCH] [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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvb_frontend.c | 34 ++++++++++++++++++++------- 1 file 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); -- 2.20.1