Commit Graph

23 Commits

Author SHA1 Message Date
Julia Lawall 2d1c4cf105 hwmon: (smsc47m192) use permission-specific DEVICE_ATTR variants
Use DEVICE_ATTR_RO for read only attributes and DEVICE_ATTR_RW for
read/write attributes. This simplifies the source code, improves
readbility, and reduces the chance of inconsistencies.

The conversion was done automatically using coccinelle. It was validated
by compiling both the old and the new source code and comparing its text,
data, and bss size.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
[groeck: Updated description]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-01-02 10:19:45 -08:00
Guenter Roeck 78305ae70c hwmon: (smsc47m192) Fix overflows seen when writing into limit attributes
Module test reports overflows when writing into temperature and voltage
limit attributes

temp1_min: Suspected overflow: [127000 vs. 0]
temp1_max: Suspected overflow: [127000 vs. 0]
temp1_offset: Suspected overflow: [127000 vs. 0]
temp2_min: Suspected overflow: [127000 vs. 0]
temp2_max: Suspected overflow: [127000 vs. 0]
temp2_offset: Suspected overflow: [127000 vs. 0]
temp3_min: Suspected overflow: [127000 vs. 0]
temp3_max: Suspected overflow: [127000 vs. 0]
temp3_offset: Suspected overflow: [127000 vs. 0]
in0_min: Suspected overflow: [3320 vs. 0]
in0_max: Suspected overflow: [3320 vs. 0]
in4_min: Suspected overflow: [15938 vs. 0]
in4_max: Suspected overflow: [15938 vs. 0]
in6_min: Suspected overflow: [1992 vs. 0]
in6_max: Suspected overflow: [1992 vs. 0]
in7_min: Suspected overflow: [2391 vs. 0]
in7_max: Suspected overflow: [2391 vs. 0]

The problem is caused by conversions from unsigned long to long and
from long to int.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-12-09 21:54:05 -08:00
Axel Lin 166f72966d hwmon: (smsc47m192) Convert to devm_hwmon_device_register_with_groups
Use devm_hwmon_device_register_with_groups() to simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-04 07:01:39 -07:00
Axel Lin 94314e2593 hwmon: (smsc47m192) Avoid forward declaration
Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-04 07:01:39 -07:00
Guenter Roeck 043572d544 hwmon: (smsc47m192) Fix temperature limit and vrm write operations
Temperature limit clamps are applied after converting the temperature
from milli-degrees C to degrees C, so either the clamp limit needs
to be specified in degrees C, not milli-degrees C, or clamping must
happen before converting to degrees C. Use the latter method to avoid
overflows.

vrm is an u8, so the written value needs to be limited to [0, 255].

Cc: Axel Lin <axel.lin@ingics.com>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
2014-07-24 06:25:25 -07:00
Guenter Roeck 2a844c148e hwmon: Replace SENSORS_LIMIT with clamp_val
SENSORS_LIMIT and the generic clamp_val have the same functionality,
and clamp_val is more efficient.

This patch reduces text size by 9052 bytes and bss size by 11624 bytes
for x86_64 builds.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: George Joseph <george.joseph@fairview5.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
2013-01-25 21:03:54 -08:00
Guenter Roeck 2625996b75 hwmon: (smsc47m192) Convert to use devm_ functions
Convert to use devm_ functions to reduce code size and simplify the code.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
2012-07-21 21:48:43 -07:00
Guenter Roeck 7cc3cb6662 hwmon: (smsc47m192) Fix checkpatch issues
Fixed:
ERROR: code indent should use tabs where possible
ERROR: do not use assignment in if condition
ERROR: spaces required around that '<' (ctx:VxV)
ERROR: spaces required around that '==' (ctx:VxV)
ERROR: spaces required around that '=' (ctx:VxV)
ERROR: spaces required around that '>' (ctx:VxV)
NOTE: whitespace errors detected, you may wish to use scripts/cleanpatch or
WARNING: please, no space before tabs
WARNING: simple_strtol is obsolete, use kstrtol instead
WARNING: simple_strtoul is obsolete, use kstrtoul instead

Modify multi-line comments to follow Documentation/CodingStyle.

Not fixed (false positive):
ERROR: Macros with multiple statements should be enclosed in a do - while loop

Cc: Hartmut Rick <linux@rick.claranet.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18 18:27:08 -07:00
Axel Lin f0967eea80 hwmon: convert drivers/hwmon/* to use module_i2c_driver()
This patch converts the drivers in drivers/hwmon/* to use the
module_i2c_driver() macro which makes the code smaller and a bit simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Corentin Labbe <corentin.labbe@geomatys.fr>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Steve Glendinning <steve.glendinning@smsc.com>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Guillaume Ligneul <guillaume.ligneul@gmail.com>
Cc: David George <david.george@ska.ac.za>
Cc: "Hans J. Koch" <hjk@hansjkoch.de>
Cc: Marc Hulsman <m.hulsman@tudelft.nl>
Cc: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2012-03-18 18:26:50 -07:00
Jean Delvare 1f86df49dd i2c: Drop I2C_CLIENT_INSMOD_1
This macro simply declares an enum, so drivers might as well declare
it themselves.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
2009-12-14 21:17:26 +01:00
Jean Delvare c3813d6af1 i2c: Get rid of struct i2c_client_address_data
Struct i2c_client_address_data only contains one field at this point,
which makes its usefulness questionable. Get rid of it and pass simple
address lists around instead.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
2009-12-14 21:17:25 +01:00
Jean Delvare 310ec79210 i2c: Drop the kind parameter from detect callbacks
The "kind" parameter always has value -1, and nobody is using it any
longer, so we can remove it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
2009-12-14 21:17:23 +01:00
Jean Delvare 52df6440a2 hwmon: Clean up detect functions
As kind is now hard-coded to -1, there is room for code clean-ups.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Corentin Labbe <corentin.labbe@geomatys.fr>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Juerg Haefliger <juergh@gmail.com>
Cc: Riku Voipio <riku.voipio@iki.fi>
Acked-by: "Hans J. Koch" <hjk@linutronix.de>
Cc: Rudolf Marek <r.marek@assembler.cz>
2009-12-09 20:35:57 +01:00
Jean Delvare 8fb597bb6e hwmon: (smsc47m192) Convert to a new-style i2c driver
The new-style smsc47m192 driver implements the optional detect()
callback to cover the use cases of the legacy driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Hartmut Rick <linux@rick.claranet.de>
2008-07-16 19:30:16 +02:00
Mark M. Hoffman 25e9c86d5a hwmon: normal_i2c arrays should be const
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-18 21:58:15 -05:00
Jean Delvare 8f74efe81d hwmon: VRM is not written to registers
What was true of reading the VRM value is also true of writing it: not
being a register value, it doesn't need hardware access, so we don't
need a reference to the i2c client. This allows for a minor code
cleanup. As gcc appears to be smart enough to simplify the generated
code by itself, this cleanup only affects the source code, the
generated binaries are unchanged.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-07 20:39:44 -05:00
Jean Delvare 90d6619a91 hwmon: VRM is not read from registers
The VRM value is not read from chip registers, so there's no need
to update the device data cache before exporting the VRM value to
user-space.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09 22:56:32 -04:00
Tony Jones 1beeffe433 hwmon: Convert from class_device to device
Convert from class_device to device for hwmon_device_register/unregister

Signed-off-by: Tony Jones <tonyj@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09 22:56:30 -04:00
Jean Delvare 7817a39e65 hwmon: Fault files naming convention
We have the following naming convention documented in
Documentation/hwmon/sysfs-interface for fault files:

in[0-*]_input_fault
fan[1-*]_input_fault
temp[1-*]_input_fault

Some drivers follow this convention (lm63, lm83, lm90, smsc47m192).
However some drivers omit the "input" part and create files named
fan1_fault (pc87427) or temp1_fault (dme1737). And the new "generic"
libsensors follows this second (non-standard) convention, so it fails
to report fault conditions for drivers which follow the standard.

We want a single naming scheme, and everyone seems to prefer the
shorter variant, so let's go for it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-07-19 14:22:12 -04:00
Jean Delvare e4a7167f82 hwmon/smsc47m192: Semaphore to mutex conversion
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-07-19 14:22:11 -04:00
Jean Delvare 00cb473905 hwmon/smsc47m192: Document the LPC47M292 as supported
The new SMSC LPC47M292 Super-I/O chip includes a hardware monitoring
block which is compatible with those of the LPC47M192.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Hartmut Rick <linux@rick.claranet.de>
2007-05-08 17:21:59 +02:00
Jean Delvare ce8c6ce1ec hwmon: Fix unchecked return status, SMSC chips
hwmon: Fix unchecked return status, SMSC chips

Fix up 2 more hwmon drivers so that they no longer ignore return
status from device_create_file().

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28 15:31:19 -07:00
Hartmut Rick 59ac83677f [PATCH] smsc47m192: New hwmon driver for SMSC LPC47M192/997
New driver (smsc47m192) which supports voltage and temperature
measurement features of SMSC LPC47M192 and LPC47M997 chips.

Signed-off-by: Hartmut Rick <linux@rick.claranet.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-22 11:10:32 -07:00