linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2009-11-05	acpi: thermal: Add EOL to the trip_point_N_type strings	Amit Kucheria	1	-5/+5
	Make the trip_point_N_type sysfs files return a string ending in EOL for consistency with other sysfs files. Signed-off-by: Amit Kucheria <amit.kucheria@canonical.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-26	thermal_sys: check get_temp return value	Michael Brunner	1	-1/+8
	The return value of the get_temp function is not checked when doing a thermal zone update. This may lead to a critical shutdown if get_temp fails and the content of the temp variable is incorrectly set higher than the critical trip point. This has been observed on a system with incorrect ACPI implementation where the corresponding methods were not serialized and therefore sometimes triggered ACPI errors (AE_ALREADY_EXISTS). The following critical shutdowns indicated a temperature of 2097 C, which was obviously wrong. The patch adds a return value check that jumps over all trip point evaluations printing a warning if get_temp fails. The trip points are evaluated again on the next polling interval with successful get_temp execution. Signed-off-by: Michael Brunner <mibru@gmx.de> Acked-by: Zhang Rui <rui.zhang@intel.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-15	thermal: remove driver_data direct access of struct device	Greg Kroah-Hartman	1	-2/+2
	In the near future, the driver core is going to not allow direct access to the driver_data pointer in struct device. Instead, the functions dev_get_drvdata() and dev_set_drvdata() should be used. These functions have been around since the beginning, so are backwards compatible with all older kernel versions. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-05-14	thermal: fix off-by-1 error in trip point trigger condition	Vladimir Zajac	1	-4/+4
	This patch fixes a regression caused by commit b1569e99c795bf83b4ddf41c4f1c42761ab7f75e "ACPI: move thermal trip handling to generic thermal layer" which accidentally changed trip point trigger condition to temp > trip_temp This patch changes the trigger condition back to temp >= trip_temp Signed-off-by: Vladimir Zajac <eightgraph@gmail.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27	thermal: support forcing support for passive cooling	Matthew Garrett	1	-0/+77
	Due to poor thermal design or Linux driving hardware outside its thermal envelope, some systems will reach critical temperature and shut down under high load. This patch adds support for forcing a polling-based passive trip point if the firmware doesn't provide one. The assumption is made that the processor is the most practical means to reduce the dynamic heat generation, so hitting the passive thermal limit will cause the CPU to be throttled until the temperature stabalises around the defined value. UI is provided via a "passive" sysfs entry in the thermal zone directory. It accepts a decimal value in millidegrees celsius, or "0" to disable the functionality. Default behaviour is for this functionality to be disabled. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-20	ACPI: move thermal trip handling to generic thermal layer	Matthew Garrett	1	-2/+186
	The ACPI code currently carries its own thermal trip handling, meaning that any other thermal implementation will need to reimplement it. Move the code to the generic thermal layer. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-20	thermal: use integers rather than strings for thermal values	Matthew Garrett	1	-13/+78
	The thermal API currently uses strings to pass values to userspace. This makes it difficult to use from within the kernel. Change the interface to use integers and fix up the consumers. Signed-off-by: Matthew Garrett <mjg@redhat.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-06	thermal: struct device - replace bus_id with dev_name(), dev_set_name()	Kay Sievers	1	-3/+3
	Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-06-25	thermal: Create CONFIG_THERMAL_HWMON=n	Rene Herman	1	-2/+2
	A bug in libsensors <= 2.10.6 is exposed when this new hwmon I/F is enabled. Create CONFIG_THERMAL_HWMON=n until some time after libsensors 2.10.7 ships so those users can run the latest kernel. libsensors 3.x is already fixed -- those users can use CONFIG_THERMAL_HWMON=y now. Signed-off-by: Rene Herman <rene.herman@gmail.com> Acked-by: Mark M. Hoffman <mhoffman@lightlink.com> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-29	thermal: re-name thermal.c to thermal_sys.c	Len Brown	1	-0/+899
	thermal_sys was already the name of the resulting module, and it is built from this one source file. Signed-off-by: Len Brown <len.brown@intel.com>