anysee_master_xfer currently accepts read messages of length 2 only.
However, sevaral frontends, e.g. tda10023 send buffers of length 1,
containing an 8-bit register number (see tda10023_readreg).
These buffers are rejected currently, making many Anysee variants
to not work. In these cases the "Unsupported Anysee version"
message is logged.
This patch alters the function to accept buffers of a length of 1 too.
Signed-off-by: István Váradi <ivaradi@xxxxxxxxxxxxxxx>
---
drivers/media/usb/dvb-usb-v2/anysee.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/dvb-usb-v2/anysee.c b/drivers/media/usb/dvb-usb-v2/anysee.c
index a1235d0cce92..eb1c6f6cf414 100644
--- a/drivers/media/usb/dvb-usb-v2/anysee.c
+++ b/drivers/media/usb/dvb-usb-v2/anysee.c
@@ -202,14 +202,14 @@ static int anysee_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
while (i < num) {
if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
- if (msg[i].len != 2 || msg[i + 1].len > 60) {
+ if (msg[i].len<1 || msg[i].len > 2 || msg[i + 1].len > 60) {
ret = -EOPNOTSUPP;
break;
}
buf[0] = CMD_I2C_READ;
buf[1] = (msg[i].addr << 1) | 0x01;
buf[2] = msg[i].buf[0];
- buf[3] = msg[i].buf[1];
+ buf[3] = (msg[i].len<2) ? 0 : msg[i].buf[1];
buf[4] = msg[i].len-1;
buf[5] = msg[i+1].len;
ret = anysee_ctrl_msg(d, buf, 6, msg[i+1].buf,
--
2.40.1
