From: Johannes Stezenbach <js@linuxtv.org>
Date: Fri, 9 Sep 2005 20:02:37 +0000 (-0700)
Subject: [PATCH] dvb: frontend: cx24110: clean up timeout handling.
X-Git-Tag: v2.6.14-rc1~419
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c589ebfce79834a9617c44d7ec0f608fa70eb42d;p=platform%2Fkernel%2Flinux-3.10.git

[PATCH] dvb: frontend: cx24110: clean up timeout handling.

Clean up timeout handling.

Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/media/dvb/frontends/cx24110.c b/drivers/media/dvb/frontends/cx24110.c
index eb4833e..d4b9798 100644
--- a/drivers/media/dvb/frontends/cx24110.c
+++ b/drivers/media/dvb/frontends/cx24110.c
@@ -387,8 +387,9 @@ static int cx24110_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltag
 
 static int cx24110_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
 {
-	int rv, bit, i;
+	int rv, bit;
 	struct cx24110_state *state = fe->demodulator_priv;
+	unsigned long timeout;
 
 	if (burst == SEC_MINI_A)
 		bit = 0x00;
@@ -403,8 +404,9 @@ static int cx24110_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t
 
 	rv = cx24110_readreg(state, 0x76);
 	cx24110_writereg(state, 0x76, ((rv & 0x90) | 0x40 | bit));
-	for (i = 500; i-- > 0 && !(cx24110_readreg(state,0x76)&0x40) ; )
-              ; /* wait for LNB ready */
+	timeout = jiffies + msecs_to_jiffies(100);
+	while (!time_after(jiffies, timeout) && !(cx24110_readreg(state, 0x76) & 0x40))
+		; /* wait for LNB ready */
 
 	return 0;
 }
@@ -414,6 +416,7 @@ static int cx24110_send_diseqc_msg(struct dvb_frontend* fe,
 {
 	int i, rv;
 	struct cx24110_state *state = fe->demodulator_priv;
+	unsigned long timeout;
 
 	for (i = 0; i < cmd->msg_len; i++)
 		cx24110_writereg(state, 0x79 + i, cmd->msg[i]);
@@ -427,8 +430,9 @@ static int cx24110_send_diseqc_msg(struct dvb_frontend* fe,
 	rv = cx24110_readreg(state, 0x76);
 
 	cx24110_writereg(state, 0x76, ((rv & 0x90) | 0x40) | ((cmd->msg_len-3) & 3));
-	for (i=100; i-- > 0 && !(cx24110_readreg(state,0x76)&0x40);)
-		msleep(1); /* wait for LNB ready */
+	timeout = jiffies + msecs_to_jiffies(100);
+	while (!time_after(jiffies, timeout) && !(cx24110_readreg(state, 0x76) & 0x40))
+		; /* wait for LNB ready */
 
 	return 0;
 }