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path: root/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
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Diffstat (limited to 'drivers/media/usb/dvb-usb-v2/rtl28xxu.c')
-rw-r--r--drivers/media/usb/dvb-usb-v2/rtl28xxu.c16
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);