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2012-03-19md/raid1,raid10: avoid deadlock during resync/recovery.NeilBrown
If RAID1 or RAID10 is used under LVM or some other stacking block device, it is possible to enter a deadlock during resync or recovery. This can happen if the upper level block device creates two requests to the RAID1 or RAID10. The first request gets processed, blocks recovery and queue requests for underlying requests in current->bio_list. A resync request then starts which will wait for those requests and block new IO. But then the second request to the RAID1/10 will be attempted and it cannot progress until the resync request completes, which cannot progress until the underlying device requests complete, which are on a queue behind that second request. So allow that second request to proceed even though there is a resync request about to start. This is suitable for any -stable kernel. Cc: stable@vger.kernel.org Reported-by: Ray Morris <support@bettercgi.com> Tested-by: Ray Morris <support@bettercgi.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-03-19md/bitmap: ensure to load bitmap when creating via sysfs.NeilBrown
When commit 69e51b449d383e (md/bitmap: separate out loading a bitmap...) created bitmap_load, it missed calling it after bitmap_create when a bitmap is created through the sysfs interface. So if a bitmap is added this way, we don't allocate memory properly and can crash. This is suitable for any -stable release since 2.6.35. Cc: stable@vger.kernel.org Signed-off-by: NeilBrown <neilb@suse.de>
2012-03-19md: don't set md arrays to readonly on shutdown.NeilBrown
It seems that with recent kernel, writeback can still be happening while shutdown is happening, and consequently data can be written after the md reboot notifier switches all arrays to read-only. This causes a BUG. So don't switch them to read-only - just mark them clean and set 'safemode' to '2' which mean that immediately after any write the array will be switch back to 'clean'. This could result in the shutdown happening when array is marked dirty, thus forcing a resync on reboot. However if you reboot without performing a "sync" first, you get to keep both halves. This is suitable for any stable kernel (though there might be some conflicts with obvious fixes in earlier kernels). Cc: stable@vger.kernel.org Signed-off-by: NeilBrown <neilb@suse.de>
2012-03-19md: allow re-add to failed arrays.NeilBrown
When an array is failed (some data inaccessible) then there is no point attempting to add a spare as it could not possibly be recovered. However that may be value in re-adding a recently removed device. e.g. if there is a write-intent-bitmap and it is clear, then access to the data could be restored by this action. So don't reject a re-add to a failed array for RAID10 and RAID5 (the only arrays types that check for a failed array). Signed-off-by: NeilBrown <neilb@suse.de>
2012-03-18hwmon: (w83627ehf) Add support for temperature offset registersGuenter Roeck
Add support for temperature offset registers for CPUTIN, SYSTIN, and AUXTIN temperatures. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Jean Delvare <khali@linux-fr.org>
2012-03-18hwmon: (jc42) Remove unnecessary device IDsGuenter Roeck
We don't really use or need separate device IDs for the various JC42.4 compliant chips, so remove them and just stick with jc42. Also update a datasheet references for SE98A, STTS424, and STTS424E02. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2012-03-18hwmon: (zl6100) Add support for ZL9101M and ZL9117MGuenter Roeck
ZL9101M and ZL9117M are compatible to ZL6100. Add support to the zl6100 driver. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2012-03-18hwmon: (adm1275) Add support for ADM1075Guenter Roeck
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (max34440) Add support for MAX34446Guenter Roeck
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (pmbus) Add more virtual registersGuenter Roeck
Add PMBUS_VIRT_READ_TEMP_AVG, PMBUS_VIRT_READ_TEMP2_AVG, PMBUS_VIRT_READ_POUT_AVG, PMBUS_VIRT_READ_POUT_MAX, and PMBUS_VIRT_RESET_POUT_HISTORY. We'll need those for MAX34446. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (pmbus) Add support for Lineage Power MDT040Guenter Roeck
MDT040 is supported by the generic PMBus driver. Add device ID and reference to datasheet. Also mention Lineage Power device support in Kconfig. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (pmbus) Add support for TI TPS40400 and TPS40422Guenter Roeck
TPS40400 and TPS40422 are supported by the generic PMBus driver. Add device IDs and data sheet references. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (max34440) Add support for 'lowest' output voltage attributeGuenter Roeck
MAX34440 and compatibles support reporting the lowest measured output voltage. Add support for it. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2012-03-18hwmon: (jc42) Convert to use devm_kzallocGuenter Roeck
Marginally less code and eliminate the possibility of memory leaks. Also replace new_client variable with client and introduce dev variable to make the code a bit easier to read. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (max16065) Convert to use devm_kzallocGuenter Roeck
Marginally less code and eliminate the possibility of memory leaks. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (smm665) Convert to use devm_kzallocGuenter Roeck
Marginally less code and eliminate the possibility of memory leaks. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (ltc4261) Convert to use devm_kzallocGuenter Roeck
Marginally less code and eliminate the possibility of memory leaks. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (pmbus) Simplify remove functionsGuenter Roeck
Since devm_kzalloc() is now used to allocate driver memory, the client driver remove function has no purpose other than to call pmbus_do_remove(). This means we can get rid of it by redefining pmbus_do_remove() to use the same prototype, and pointing to it directly. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (pmbus) Convert pmbus drivers to use devm_kzallocGuenter Roeck
Marginally less code and eliminate the possibility of memory leaks. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (lineage-pem) Convert to use devm_kzallocGuenter Roeck
Marginally less code and eliminate the possibility of memory leaks. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (hwmon-vid) Fix checkpatch issuesGuenter Roeck
Fixed: ERROR: code indent should use tabs where possible ERROR: space required before the open parenthesis '(' WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable Not fixed (url): WARNING: line over 80 characters Not fixed (false positive): ERROR: Macros with complex values should be enclosed in parenthesis Cc: Rudolf Marek <r.marek@assembler.cz> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2012-03-18hwmon: (hwmon-vid) Add new entries to VRM model tableGuenter Roeck
The VRM model table was missing several Intel CPUs, resulting in wrong VRM table entries to be used for many recent CPUs. Update it. Also, use values from struct cpuinfo_x86 to retrieve CPU model information instead of re-calculating it locally. Cc: Rudolf Marek <r.marek@assembler.cz> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2012-03-18hwmon: (lm80) Add detection of NatSemi/TI LM96080Jean Delvare
Add detection of the National Semiconductor (now Texas Instruments) LM96080. It is functionally compatible with the LM80 but detection is completely different. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Guenter Roeck <guenter.roeck@ericsson.com> Cc: Frans Meulenbroeks <fransmeulenbroeks@gmail.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2012-03-18hwmon: (lm87) Get rid of macro-generated functionsJean Delvare
Use SENSORS_DEVICE_ATTR instead of DEVICE_ATTR for most attributes, so that the attribute number can be retrieved and it is no longer necessary to generate functions using macros. This shaves about 2 kB on the binary module size. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2012-03-18hwmon: (lm87) Reorganize the codeJean Delvare
Reorder functions and driver declaration to no longer need to forward-declare functions. Also rename new_client to just client everywhere for readability. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2012-03-18hwmon: (applesmc) Silence uninitialized warningsHenrik Rydberg
Some error paths do not set a result, leading to the (false) assumption that the value may be used uninitialized. Set results for those paths as well. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2012-03-18hwmon: (lm70) Fix: do not use assignment in if conditionGuenter Roeck
Fix checkpatch issue: ERROR: do not use assignment in if condition Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (lm70) Register hwmon device after creating attribute files, and ↵Guenter Roeck
remove it first Register hwmon device as last operation in the probe function to ensure that all attribute files exist when accessed from user applications. Otherwise, there is a short time frame where the device is registered as hwmon device but sysfs attributes do not yet exist. This could result in applications erroneously not detecting attributes. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (w83l786ng) Fix multi-line commentsGuenter Roeck
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (w83l785ts) Fix multi-line commentsGuenter Roeck
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (w83781d) Fix: do not use assignment in if conditionGuenter Roeck
Fix checkpatch issue: ERROR: do not use assignment in if condition Replace repeated calls to device_create_file() with calls to sysfs_create_group. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (w83781d) Fix multi-line commentsGuenter Roeck
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (smsc47b397) Fix multi-line commentsGuenter Roeck
Cc: Mark M Hoffman <mhoffman@lightlink.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (pc87427) Fix multi-line commentsGuenter Roeck
Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2012-03-18hwmon: (max1668) Fix multi-line commentsGuenter Roeck
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (lm80) Fix multi-line commentsGuenter Roeck
Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2012-03-18hwmon: (emc2103) Fix multi-line commentsGuenter Roeck
Cc: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (adm1031) Fix multi-line commentsGuenter Roeck
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (adm1029) Fix multi-line commentsGuenter Roeck
Cc: Corentin Labbe <corentin.labbe@geomatys.fr> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (w83627hf) Fix checkpatch issuesGuenter Roeck
Fixed: WARNING: simple_strtol is obsolete, use kstrtol instead WARNING: simple_strtoul is obsolete, use kstrtoul instead ERROR: do not use assignment in if condition Modify multi-line comments to follow Documentation/CodingStyle. Other checkpatch issues not fixed to reduce number of conflicts with pending rewrite as mfd driver. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (w83l786ng) Fix checkpatch issuesGuenter Roeck
Fixed: ERROR: code indent should use tabs where possible ERROR: do not use assignment in if condition ERROR: space required after that ',' (ctx:VxV) WARNING: braces {} are not necessary for single statement blocks WARNING: please, no space before tabs WARNING: please, no spaces at the start of a line WARNING: simple_strtol is obsolete, use kstrtol instead WARNING: simple_strtoul is obsolete, use kstrtoul instead WARNING: space prohibited between function name and open parenthesis '(' Not fixed (false positive): ERROR: Macros with complex values should be enclosed in parenthesis Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (w83793) Fix checkpatch issuesGuenter Roeck
Fixed: ERROR: code indent should use tabs where possible ERROR: do not use assignment in if condition ERROR: space required after that ',' (ctx:VxV) WARNING: braces {} are not necessary for any arm of this statement WARNING: braces {} are not necessary for single statement blocks WARNING: simple_strtol is obsolete, use kstrtol instead WARNING: simple_strtoul is obsolete, use kstrtoul instead Modify multi-line comments to follow Documentation/CodingStyle. Also replaced "<constant> == <variable>" with "<variable> == <constant>". Translation was done with the following coccinelle script to limit risk. @@ identifier i; constant C; @@ <... - C == i + i == C ...> Not fixed (false positive): ERROR: Macros with complex values should be enclosed in parenthesis Cc: Rudolf Marek <r.marek@assembler.cz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (w83792d) Fix checkpatch issuesGuenter Roeck
Fixed: ERROR: code indent should use tabs where possible ERROR: do not use assignment in if condition ERROR: space prohibited after that open parenthesis '(' ERROR: space required after that ',' (ctx:VxV) ERROR: space required after that ',' (ctx:WxV) ERROR: spaces required around that ':' (ctx:VxE) 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) ERROR: spaces required around that '||' (ctx:VxV) ERROR: spaces required around that ':' (ctx:VxV) ERROR: spaces required around that '?' (ctx:VxV) WARNING: braces {} are not necessary for any arm of this statement WARNING: braces {} are not necessary for single statement blocks WARNING: line over 80 characters WARNING: simple_strtol is obsolete, use kstrtol instead WARNING: simple_strtoul is obsolete, use kstrtoul instead WARNING: space prohibited between function name and open parenthesis '(' Modify multi-line comments to follow Documentation/CodingStyle. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (vt1211) Fix: do not use assignment in if conditionGuenter Roeck
Fix checkpatch issue: ERROR: do not use assignment in if condition Replace repeated calls to device_create_file() with calls to sysfs_create_group. Cc: Juerg Haefliger <juergh@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (vt1211) Fix checkpatch issuesGuenter Roeck
Fixed: ERROR: do not use assignment in if condition ERROR: switch and case should be at the same indent ERROR: trailing statements should be on next line WARNING: braces {} are not necessary for single statement blocks WARNING: simple_strtol is obsolete, use kstrtol instead Modify multi-line comments to follow Documentation/CodingStyle. Not fixed (false positive): ERROR: Macros with complex values should be enclosed in parenthesis Not all fixed (code complexity): ERROR: do not use assignment in if condition Cc: Juerg Haefliger <juergh@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (via686a) Fix checkpatch issuesGuenter Roeck
Fixed: ERROR: do not use assignment in if condition ERROR: open brace '{' following function declarations go on the next line ERROR: space prohibited before that close parenthesis ')' ERROR: space required after that ',' (ctx:VxV) ERROR: spaces required around that '==' (ctx:VxV) ERROR: spaces required around that ':' (ctx:VxV) ERROR: spaces required around that '?' (ctx:VxV) ERROR: that open brace { should be on the previous line WARNING: line over 80 characters 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 Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (pc87360) Fix: do not use assignment in if conditionGuenter Roeck
Fix checkpatch issue: ERROR: do not use assignment in if condition Replace repeated calls to device_create_file() with calls to sysfs_create_group. Cc: Jean Delvare <khali@linux-fr.org> Cc: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (pc87360) Fix checkpatch issuesGuenter Roeck
Fixed: ERROR: code indent should use tabs where possible ERROR: do not use assignment in if condition ERROR: "foo * bar" should be "foo *bar" ERROR: space required after that ',' (ctx:VxV) ERROR: spaces required around that ':' (ctx:VxE) ERROR: spaces required around that '==' (ctx:VxV) WARNING: braces {} are not necessary for single statement blocks WARNING: line over 80 characters WARNING: please, no space before tabs WARNING: please, no spaces at the start of a line WARNING: simple_strtol is obsolete, use kstrtol instead WARNING: simple_strtoul is obsolete, use kstrtoul instead Not or not all fixed (code complexity): ERROR: Macros with complex values should be enclosed in parenthesis ERROR: do not use assignment in if condition Cc: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (max1619): Fix checkpatch issuesGuenter Roeck
Fixed: ERROR: do not use assignment in if condition ERROR: trailing whitespace WARNING: line over 80 characters WARNING: please, no spaces at the start of a line WARNING: simple_strtol is obsolete, use kstrtol instead Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-18hwmon: (lm85) Fix checkpatch issuesGuenter Roeck
Fixed: ERROR: code indent should use tabs where possible ERROR: do not use assignment in if condition WARNING: simple_strtol is obsolete, use kstrtol instead WARNING: simple_strtoul is obsolete, use kstrtoul instead Modify multi-line comments to follow Documentation/CodingStyle. Also: s/#define^I/#define / Not fixed (false positive): ERROR: Macros with multiple statements should be enclosed in a do - while loop Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>