linux-stable.git/drivers/hwmon, branch v3.4.87

hwmon: Prevent some divide by zeros in FAN_TO_REG()

2014-04-14T13:44:31+00:00

commit 3806b45ba4655147a011df03242cc197ab986c43 upstream.

The "rpm * div" operations can overflow here, so this patch adds an
upper limit to rpm to prevent that.  Jean Delvare helped me with this
patch.

Signed-off-by: Dan Carpenter 
Acked-by: Roger Lucas 
Signed-off-by: Jean Delvare 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings 
Cc: Qiang Huang 
Signed-off-by: Greg Kroah-Hartman

hwmon: (applesmc) Always read until end of data

2014-04-14T13:44:31+00:00

commit 25f2bd7f5add608c1d1405938f39c96927b275ca upstream.

The crash reported and investigated in commit 5f4513 turned out to be
caused by a change to the read interface on newer (2012) SMCs.

Tests by Chris show that simply reading the data valid line is enough
for the problem to go away. Additional tests show that the newer SMCs
no longer wait for the number of requested bytes, but start sending
data right away.  Apparently the number of bytes to read is no longer
specified as before, but instead found out by reading until end of
data. Failure to read until end of data confuses the state machine,
which eventually causes the crash.

As a remedy, assuming bit0 is the read valid line, make sure there is
nothing more to read before leaving the read function.

Tested to resolve the original problem, and runtested on MBA3,1,
MBP4,1, MBP8,2, MBP10,1, MBP10,2. The patch seems to have no effect on
machines before 2012.

Tested-by: Chris Murphy 
Signed-off-by: Henrik Rydberg 
Signed-off-by: Guenter Roeck 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings 
Cc: Qiang Huang 
Signed-off-by: Greg Kroah-Hartman

hwmon: (coretemp) Add support for Atom CE4110/4150/4170

2014-04-14T13:44:31+00:00

commit 1102dcab849313bd5a340b299b5cf61b518fbc0f upstream.

TjMax for the CE4100 series of Atom CPUs was previously reported to be
110 degrees C.

cpuinfo logs on the web show existing CPU types CE4110, CE4150, and CE4170,
reported as "model name : Intel(R) Atom(TM) CPU CE41{1|5|7}0 @ 1.{2|6}0GHz"
with model 28 (0x1c) and stepping 10 (0x0a). Add the three known variants
to the tjmax table.

Signed-off-by: Guenter Roeck 
Acked-by: Jean Delvare 
Signed-off-by: Ben Hutchings 
Cc: Qiang Huang 
Signed-off-by: Greg Kroah-Hartman

hwmon: (coretemp) Improve support for TjMax detection on Atom CPUs

2014-04-14T13:44:31+00:00

commit 41e58a1f2b90c88d94b4bd84beb9927a4c2704e9 upstream.

Atom CPUs don't have a register to retrieve TjMax. Detection so far was
incomplete. Use the X86 model ID to improve it.

Signed-off-by: Guenter Roeck 
Signed-off-by: Jean Delvare 
Cc: Qiang Huang 
Signed-off-by: Greg Kroah-Hartman

hwmon: (coretemp) Add support for Atom D2000 and N2000 series CPU models

2014-04-14T13:44:31+00:00

commit 5592906f8b01282ea3c2acaf641fd067ad4bb3dc upstream.

Document the Atom series D2000 and N2000 (Cedar Trail) as being supported.
List and set TjMax for those series.

Cc: Fenghua Yu 
Cc: "R, Durgadoss" 
Signed-off-by: Guenter Roeck 
Signed-off-by: Jean Delvare 
Signed-off-by: Ben Hutchings 
Cc: Qiang Huang 
Signed-off-by: Greg Kroah-Hartman

hwmon: (coretemp) Improve support of recent Atom CPU models

2014-04-14T13:44:31+00:00

commit fcc14ac1a86931f38da047cf8fb634c6db7b58bc upstream.

Document the new Atom series (Tunnel Creek and Medfield) as being
supported, and list TjMax for the Atom E600 series.

Also enable the Atom tjmax heuristic for these Atom CPU models.

Signed-off-by: Jean Delvare 
Reviewed-by: Guenter Roeck 
Cc: Alexander Stein 
Cc: Fenghua Yu 
Cc: "R, Durgadoss" 
Signed-off-by: Ben Hutchings 
Cc: Qiang Huang 
Signed-off-by: Greg Kroah-Hartman

hwmon: (max1668) Fix writing the minimum temperature

2014-03-11T23:10:01+00:00

commit 500a91571f0a5d0d3242d83802ea2fd1faccc66e upstream.

When trying to set the minimum temperature, the driver was erroneously
writing the maximum temperature into the chip.

Signed-off-by: Guenter Roeck 
Reviewed-by: Jean Delvare 
Signed-off-by: Greg Kroah-Hartman

hwmon: (coretemp) Fix truncated name of alarm attributes

2014-01-29T13:10:42+00:00

commit 3f9aec7610b39521c7c69d754de7265f6994c194 upstream.

When the core number exceeds 9, the size of the buffer storing the
alarm attribute name is insufficient and the attribute name is
truncated. This causes libsensors to skip these attributes as the
truncated name is not recognized.

Reported-by: Andreas Hollmann 
Signed-off-by: Jean Delvare 
Signed-off-by: Guenter Roeck 
Signed-off-by: Greg Kroah-Hartman

hwmon: (w83l768ng) Fix fan speed control range

2014-01-08T17:42:12+00:00

commit 33a7ab91d509fa33b4bcd3ce0038cc80298050da upstream.

The W83L786NG stores the fan speed on 4 bits while the sysfs interface
uses a 0-255 range. Thus the driver should scale the user input down
to map it to the device range, and scale up the value read from the
device before presenting it to the user. The reserved register nibble
should be left unchanged.

Signed-off-by: Jean Delvare 
Reviewed-by: Guenter Roeck 
Signed-off-by: Greg Kroah-Hartman

hwmon: (w83l786ng) Fix fan speed control mode setting and reporting

2013-12-20T15:34:19+00:00

commit cf7559bc053471f32373d71d04a9aa19e0b48d59 upstream.

The wrong mask is used, which causes some fan speed control modes
(pwmX_enable) to be incorrectly reported, and some modes to be
impossible to set.

[JD: add subject and description.]

Signed-off-by: Brian Carnes 
Signed-off-by: Jean Delvare 
Signed-off-by: Greg Kroah-Hartman