linux-kernel - [PATCH 8/35] W1: feature, w1

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Message-ID: <20080328122510.GI3613@spacedout.fries.net>
Date:	Fri, 28 Mar 2008 07:25:10 -0500
From:	David Fries <david@...es.net>
To:	linux-kernel@...r.kernel.org
Cc:	Evgeniy Polyakov <johnpol@....mipt.ru>
Subject: [PATCH 8/35] W1: feature, w1_therm.c use strong pullup

w1_therm.c 1.3 1.4 1.10
Use the strong pullup not the sleep.  Note that the pullup goes before
W1_CONVERT_TEMP not after.
+w1_next_pullup(dev, tm);
 w1_write_8(dev, W1_CONVERT_TEMP);
-msleep(tm);

Signed-off-by: David Fries <david@...es.net>
---
 drivers/w1/slaves/w1_therm.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c
index fb28aca..dd26db2 100644
--- a/drivers/w1/slaves/w1_therm.c
+++ b/drivers/w1/slaves/w1_therm.c
@@ -192,10 +192,10 @@ static ssize_t w1_therm_read_bin(struct kobject *kobj,
 			int count = 0;
 			unsigned int tm = 750;
 
+			/* 750ms strong pullup (or delay) after the convert */
+			w1_next_pullup(dev, tm);
 			w1_write_8(dev, W1_CONVERT_TEMP);
 
-			msleep(tm);
-
 			if (!w1_reset_select_slave(sl)) {
 
 				w1_write_8(dev, W1_READ_SCRATCHPAD);
-- 
1.4.4.4

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