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[media] rtl2830: prevent hw access when sleeping

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to prevent I/O errors...

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari 2012-05-18 16:02:55 -03:00 committed by Mauro Carvalho Chehab
parent 631a2b6112
commit c188637dc5
1 changed files with 12 additions and 0 deletions
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12
drivers/media/dvb/frontends/rtl2830.c
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@ -381,6 +381,9 @@ static int rtl2830_get_frontend(struct dvb_frontend *fe)
int ret;
u8 buf[3];
if (priv->sleeping)
return 0;
ret = rtl2830_rd_regs(priv, 0x33c, buf, 2);
if (ret)
goto err;
@ -525,6 +528,9 @@ static int rtl2830_read_snr(struct dvb_frontend *fe, u16 *snr)
{ 92888734, 92888734, 95487525, 99770748 },
};
if (priv->sleeping)
return 0;
/* reports SNR in resolution of 0.1 dB */
ret = rtl2830_rd_reg(priv, 0x33c, &tmp);
@ -563,6 +569,9 @@ static int rtl2830_read_ber(struct dvb_frontend *fe, u32 *ber)
int ret;
u8 buf[2];
if (priv->sleeping)
return 0;
ret = rtl2830_rd_regs(priv, 0x34e, buf, 2);
if (ret)
goto err;
@ -588,6 +597,9 @@ static int rtl2830_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
u8 buf[2];
u16 if_agc_raw, if_agc;
if (priv->sleeping)
return 0;
ret = rtl2830_rd_regs(priv, 0x359, buf, 2);
if (ret)
goto err;