diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
| commit | 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch) | |
| tree | fa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/media/usb/dvb-usb-v2/rtl28xxu.c | |
| parent | d4e493caf788ef44982e131ff9c786546904d934 (diff) | |
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/media/usb/dvb-usb-v2/rtl28xxu.c')
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c index 5a503a6bb..eb5787a31 100644 --- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c +++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c @@ -181,11 +181,17 @@ static int rtl28xxu_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], goto err_mutex_unlock; } else if (msg[0].addr == 0x10) { /* method 1 - integrated demod */ - req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1); - req.index = CMD_DEMOD_RD | dev->page; - req.size = msg[1].len; - req.data = &msg[1].buf[0]; - ret = rtl28xxu_ctrl_msg(d, &req); + if (msg[0].buf[0] == 0x00) { + /* return demod page from driver cache */ + msg[1].buf[0] = dev->page; + ret = 0; + } else { + req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1); + req.index = CMD_DEMOD_RD | dev->page; + req.size = msg[1].len; + req.data = &msg[1].buf[0]; + ret = rtl28xxu_ctrl_msg(d, &req); + } } else if (msg[0].len < 2) { /* method 2 - old I2C */ req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1); |