kernel/drivers/thermal, branch linux-4.3.y

Merge tag 'samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes

2015-10-21T15:02:13Z

Merge "Samsung 2nd fixes for v4.3" from Kukjin Kim: - fix SOC detection of exynos thermal on exynos5260 - fix audio card detection on Peach boards - fix double of_node_put() when parsing child power domains * tag 'samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: thermal: exynos: Fix register read in TMU ARM: dts: Fix audio card detection on Peach boards ARM: EXYNOS: Fix double of_node_put() when parsing child power domains

thermal: exynos: Fix register read in TMU

2015-10-16T23:08:56Z

The value of emul_con was getting overwritten if the selected soc is SOC_ARCH_EXYNOS5260. And so as a result we were reading from the wrong register in the case of SOC_ARCH_EXYNOS5260. Fixes: 488c7455d74c ("thermal: exynos: Add the support for Exynos5433 TMU") Signed-off-by: Sudip Mukherjee Reviewed-by: Krzysztof Kozlowski Reviewed-by: Chanwoo Choi Acked-by: Lukasz Majewski Signed-off-by: Krzysztof Kozlowski Signed-off-by: Kukjin Kim

thermal: avoid division by zero in power allocator

2015-10-02T01:42:35Z

During boot I get a div by zero Oops regression starting in v4.3-rc3. Signed-off-by: Andrea Arcangeli Reviewed-by: Javi Merino Cc: Zhang Rui Cc: Eduardo Valentin Cc: Daniel Kurtz Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

thermal: power_allocator: exit early if there are no cooling devices

2015-09-20T07:37:16Z

Don't waste cycles in the power allocator governor's throttle function if there are no cooling devices and exit early. This commit doesn't change any functionality, but should provide better performance for the odd case of a thermal zone with trip points but without cooling devices. Cc: Zhang Rui Cc: Eduardo Valentin Reviewed-by: Daniel Kurtz Signed-off-by: Javi Merino Signed-off-by: Eduardo Valentin

thermal: power_allocator: don't require tzp to be present for the thermal zone

2015-09-14T14:43:15Z

Thermal zones created using thermal_zone_device_create() may not have tzp. As the governor gets its parameters from there, allocate it while the governor is bound to the thermal zone so that it can operate in it. In this case, tzp is freed when the thermal zone switches to another governor. Cc: Zhang Rui Cc: Eduardo Valentin Reviewed-by: Daniel Kurtz Signed-off-by: Javi Merino Signed-off-by: Eduardo Valentin

thermal: power_allocator: relax the requirement of two passive trip points

2015-09-14T14:41:45Z

The power allocator governor currently requires that the thermal zone has at least two passive trip points. If there aren't, the governor refuses to bind to the thermal zone. This commit relaxes that requirement. Now the governor will bind to all thermal zones regardless of how many trip points they have. Cc: Zhang Rui Cc: Eduardo Valentin Reviewed-by: Daniel Kurtz Signed-off-by: Javi Merino Signed-off-by: Eduardo Valentin

thermal: power_allocator: relax the requirement of a sustainable_power in tzp

2015-09-14T14:40:51Z

The power allocator governor currently requires that a sustainable power is passed as part of the thermal zone's thermal zone parameters. If that parameter is not provided, it doesn't register with the thermal zone. While this parameter is strongly recommended for optimal performance, it doesn't need to be mandatory. Relax the requirement and allow the governor to bind to thermal zones that don't provide it by estimating it from the cooling devices' power model. Cc: Zhang Rui Cc: Eduardo Valentin Reviewed-by: Daniel Kurtz Signed-off-by: Javi Merino Signed-off-by: Eduardo Valentin

thermal: Add a function to get the minimum power

2015-09-14T14:39:46Z

The thermal core already has a function to get the maximum power of a cooling device: power_actor_get_max_power(). Add a function to get the minimum power of a cooling device. Cc: Zhang Rui Cc: Eduardo Valentin Reviewed-by: Daniel Kurtz Signed-off-by: Javi Merino Signed-off-by: Eduardo Valentin

thermal: cpu_cooling: free power table on error or when unregistering

2015-09-14T03:34:05Z

The power table is not being freed on error from cpufreq_cooling register or when unregistering. Free it. Fixes: c36cf0717631 ("thermal: cpu_cooling: implement the power cooling device API") Cc: Zhang Rui Cc: Eduardo Valentin Signed-off-by: Javi Merino Signed-off-by: Eduardo Valentin

thermal: cpu_cooling: don't call kcalloc() under rcu_read_lock

2015-09-14T03:33:17Z

build_dyn_power_table() allocates the power table while holding rcu_read_lock. kcalloc using GFP_KERNEL may sleep, so it can't be called in an RCU read-side path. Move the rcu protection to the part of the function that really needs it: the part that handles the dev_pm_opp pointer received from dev_pm_opp_find_freq_ceil(). In the unlikely case that there is an OPP added to the cpu while this function is running, return -EAGAIN. Fixes: c36cf0717631 ("thermal: cpu_cooling: implement the power cooling device API") Cc: Zhang Rui Cc: Eduardo Valentin Signed-off-by: Javi Merino Signed-off-by: Eduardo Valentin