diff options
| author | Andrew de Quincey <adq_dvb@lidskialf.net> | 2006-07-18 23:37:13 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-07-30 00:22:26 +0400 |
| commit | 95faba22d8b81f0cd85b995232b7d05c45a26f3e (patch) | |
| tree | 1ce43205118a7bcebbcfc063a5b173c8fe398729 | |
| parent | 55c05b6d226f68266d1f88dd81795b04d096b1c8 (diff) | |
| download | linux-95faba22d8b81f0cd85b995232b7d05c45a26f3e.tar.xz | |
V4L/DVB (4322): Fix dvb-pll autoprobing
Trent Piepho pointed out that the pll test i2c transmission is slightly
wrong; it was transmitting a zero length message, and then reading from the
PLL. This was wrong; it should only be transmitting a single read i2c message.
Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| -rw-r--r-- | drivers/media/dvb/frontends/dvb-pll.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/media/dvb/frontends/dvb-pll.c b/drivers/media/dvb/frontends/dvb-pll.c index 4c8a506479b4..2be33f27c69f 100644 --- a/drivers/media/dvb/frontends/dvb-pll.c +++ b/drivers/media/dvb/frontends/dvb-pll.c @@ -614,8 +614,7 @@ static struct dvb_tuner_ops dvb_pll_tuner_ops = { int dvb_pll_attach(struct dvb_frontend *fe, int pll_addr, struct i2c_adapter *i2c, struct dvb_pll_desc *desc) { u8 b1 [] = { 0 }; - struct i2c_msg msg [] = { { .addr = pll_addr, .flags = 0, .buf = NULL, .len = 0 }, - { .addr = pll_addr, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; + struct i2c_msg msg = { .addr = pll_addr, .flags = I2C_M_RD, .buf = b1, .len = 1 }; struct dvb_pll_priv *priv = NULL; int ret; @@ -623,8 +622,8 @@ int dvb_pll_attach(struct dvb_frontend *fe, int pll_addr, struct i2c_adapter *i2 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); - ret = i2c_transfer (i2c, msg, 2); - if (ret != 2) + ret = i2c_transfer (i2c, &msg, 1); + if (ret != 1) return -1; if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); |