From b45a7a2004b298c70a67dde4c502247a03029609 Mon Sep 17 00:00:00 2001
From: Manu Abraham <abraham.manu@gmail.com>
Date: Sat, 13 Feb 2010 17:06:14 -0300
Subject: [PATCH] --- yaml --- r: 192783 b: refs/heads/master c:
 c8382c8e3295a1c85975c1898410f4d103650e4a h: refs/heads/master i:   192781:
 6ba1057e48c1ccceebaecfac37158d1a35be253f   192779:
 0d1068f08fec765cdac54fbfc868ed4da86d7ae5   192775:
 4a88fd6766a8d4d587807363fdab2789f2b5f7d4   192767:
 09a5654fad59edc0e44e23c367d9f3c0e3897b9a v: v3

---
 [refs]                                      | 2 +-
 trunk/drivers/media/dvb/frontends/stv090x.c | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 3378ea872f72..2978ba0dc42a 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5817ea0c83665dbc117cb7ca637202da0fb1abce
+refs/heads/master: c8382c8e3295a1c85975c1898410f4d103650e4a
diff --git a/trunk/drivers/media/dvb/frontends/stv090x.c b/trunk/drivers/media/dvb/frontends/stv090x.c
index a461fdff2c9c..425e7a43ae19 100644
--- a/trunk/drivers/media/dvb/frontends/stv090x.c
+++ b/trunk/drivers/media/dvb/frontends/stv090x.c
@@ -758,6 +758,15 @@ static int stv090x_i2c_gate_ctrl(struct stv090x_state *state, int enable)
 {
 	u32 reg;
 
+	/*
+	 * NOTE! A lock is used as a FSM to control the state in which
+	 * access is serialized between two tuners on the same demod.
+	 * This has nothing to do with a lock to protect a critical section
+	 * which may in some other cases be confused with protecting I/O
+	 * access to the demodulator gate.
+	 * In case of any error, the lock is unlocked and exit within the
+	 * relevant operations themselves.
+	 */
 	if (enable)
 		mutex_lock(&state->internal->tuner_lock);