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List:       linux-stable-commits
Subject:    patch hwmon-w83627hf-fix-setting-fan-min-right-after-driver-load.patch queued to -stable tree
From:       <gregkh () suse ! de>
Date:       2007-10-31 15:45:23
Message-ID: 20071031154549.3B4CE14540D4 () imap ! suse ! de
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This is a note to let you know that we have just queued up the patch titled

     Subject: hwmon/w83627hf: Fix setting fan min right after driver load

to the 2.6.23-stable tree.  Its filename is

     hwmon-w83627hf-fix-setting-fan-min-right-after-driver-load.patch

A git repo of this tree can be found at 
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary


From khali@linux-fr.org  Wed Oct 31 07:58:46 2007
From: Jean Delvare <khali@linux-fr.org>
Date: Mon, 15 Oct 2007 14:32:27 +0200
Subject: hwmon/w83627hf: Fix setting fan min right after driver load
To: stable@kernel.org
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Message-ID: <20071015143227.6548d45b@hyperion.delvare>

From: Jean Delvare <khali@linux-fr.org>

Already in Linus' tree:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=c09c5184a26158da32801e89d5849d774605f0dd


We need to read the fan clock dividers at initialization time,
otherwise the code in store_fan_min() may use uninitialized values.
That's pretty much the same bug and same fix as for the w83627ehf
driver last month.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/hwmon/w83627hf.c |   34 ++++++++++++++++++++++------------
 1 file changed, 22 insertions(+), 12 deletions(-)

--- a/drivers/hwmon/w83627hf.c
+++ b/drivers/hwmon/w83627hf.c
@@ -391,6 +391,7 @@ static int __devexit w83627hf_remove(str
 
 static int w83627hf_read_value(struct w83627hf_data *data, u16 reg);
 static int w83627hf_write_value(struct w83627hf_data *data, u16 reg, u16 value);
+static void w83627hf_update_fan_div(struct w83627hf_data *data);
 static struct w83627hf_data *w83627hf_update_device(struct device *dev);
 static void w83627hf_init_device(struct platform_device *pdev);
 
@@ -1244,6 +1245,7 @@ static int __devinit w83627hf_probe(stru
 	data->fan_min[0] = w83627hf_read_value(data, W83781D_REG_FAN_MIN(1));
 	data->fan_min[1] = w83627hf_read_value(data, W83781D_REG_FAN_MIN(2));
 	data->fan_min[2] = w83627hf_read_value(data, W83781D_REG_FAN_MIN(3));
+	w83627hf_update_fan_div(data);
 
 	/* Register common device attributes */
 	if ((err = sysfs_create_group(&dev->kobj, &w83627hf_group)))
@@ -1556,6 +1558,24 @@ static void __devinit w83627hf_init_devi
 			    | 0x01);
 }
 
+static void w83627hf_update_fan_div(struct w83627hf_data *data)
+{
+	int reg;
+
+	reg = w83627hf_read_value(data, W83781D_REG_VID_FANDIV);
+	data->fan_div[0] = (reg >> 4) & 0x03;
+	data->fan_div[1] = (reg >> 6) & 0x03;
+	if (data->type != w83697hf) {
+		data->fan_div[2] = (w83627hf_read_value(data,
+				       W83781D_REG_PIN) >> 6) & 0x03;
+	}
+	reg = w83627hf_read_value(data, W83781D_REG_VBAT);
+	data->fan_div[0] |= (reg >> 3) & 0x04;
+	data->fan_div[1] |= (reg >> 4) & 0x04;
+	if (data->type != w83697hf)
+		data->fan_div[2] |= (reg >> 5) & 0x04;
+}
+
 static struct w83627hf_data *w83627hf_update_device(struct device *dev)
 {
 	struct w83627hf_data *data = dev_get_drvdata(dev);
@@ -1633,18 +1653,8 @@ static struct w83627hf_data *w83627hf_up
 			  w83627hf_read_value(data, W83781D_REG_TEMP_HYST(3));
 		}
 
-		i = w83627hf_read_value(data, W83781D_REG_VID_FANDIV);
-		data->fan_div[0] = (i >> 4) & 0x03;
-		data->fan_div[1] = (i >> 6) & 0x03;
-		if (data->type != w83697hf) {
-			data->fan_div[2] = (w83627hf_read_value(data,
-					       W83781D_REG_PIN) >> 6) & 0x03;
-		}
-		i = w83627hf_read_value(data, W83781D_REG_VBAT);
-		data->fan_div[0] |= (i >> 3) & 0x04;
-		data->fan_div[1] |= (i >> 4) & 0x04;
-		if (data->type != w83697hf)
-			data->fan_div[2] |= (i >> 5) & 0x04;
+		w83627hf_update_fan_div(data);
+
 		data->alarms =
 		    w83627hf_read_value(data, W83781D_REG_ALARM1) |
 		    (w83627hf_read_value(data, W83781D_REG_ALARM2) << 8) |


Patches currently in stable-queue which might be from khali@linux-fr.org are

queue-2.6.23/hwmon-lm87-disable-vid-when-it-should-be.patch
queue-2.6.23/hwmon-lm87-fix-a-division-by-zero.patch
queue-2.6.23/hwmon-w83627hf-don-t-assume-bank-0.patch
queue-2.6.23/hwmon-w83627hf-fix-setting-fan-min-right-after-driver-load.patch
-
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