From: Patrick Boettcher <pb@linuxtv.org>
Date: Tue, 21 Nov 2006 08:35:10 +0000 (-0300)
Subject: V4L/DVB (4864): TDA826x I2C read with 2 messages
X-Git-Tag: v2.6.20-rc2~85^2~18^2~68
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=8949f1a2424a38a4080a2a3561a2698f215a7c4a;p=linux-2.6-omap-h63xx.git

V4L/DVB (4864): TDA826x I2C read with 2 messages

Added a dump I2C message to the TDA826x-driver to fix I2C read for
identification with ttusb2-driver.

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---

diff --git a/drivers/media/dvb/frontends/tda826x.c b/drivers/media/dvb/frontends/tda826x.c
index 4f01d7b47cd..79f971dc52b 100644
--- a/drivers/media/dvb/frontends/tda826x.c
+++ b/drivers/media/dvb/frontends/tda826x.c
@@ -132,18 +132,21 @@ struct dvb_frontend *tda826x_attach(struct dvb_frontend *fe, int addr, struct i2
 {
 	struct tda826x_priv *priv = NULL;
 	u8 b1 [] = { 0, 0 };
-	struct i2c_msg msg = { .addr = addr, .flags = I2C_M_RD, .buf = b1, .len = 2 };
+	struct i2c_msg msg[2] = {
+		{ .addr = addr, .flags = 0,        .buf = NULL, .len = 0 },
+		{ .addr = addr, .flags = I2C_M_RD, .buf = b1, .len = 2 }
+	};
 	int ret;
 
 	dprintk("%s:\n", __FUNCTION__);
 
 	if (fe->ops.i2c_gate_ctrl)
 		fe->ops.i2c_gate_ctrl(fe, 1);
-	ret = i2c_transfer (i2c, &msg, 1);
+	ret = i2c_transfer (i2c, msg, 2);
 	if (fe->ops.i2c_gate_ctrl)
 		fe->ops.i2c_gate_ctrl(fe, 0);
 
-	if (ret != 1)
+	if (ret != 2)
 		return NULL;
 	if (!(b1[1] & 0x80))
 		return NULL;