diff mbox series

[v5,06/11] thermal: Add mode helpers

Message ID 20200626173755.26379-7-andrzej.p@collabora.com (mailing list archive)
State New, archived
Headers show
Series [v5,01/11] acpi: thermal: Fix error handling in the register function | expand

Commit Message

Andrzej Pietrasiewicz June 26, 2020, 5:37 p.m. UTC 
Prepare for making the drivers not access tzd's private members.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
[EXPORT_SYMBOL -> EXPORT_SYMBOL_GPL]
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
---
 drivers/thermal/thermal_core.c | 53 ++++++++++++++++++++++++++++++++++
 include/linux/thermal.h        | 13 +++++++++
 2 files changed, 66 insertions(+)

Comments

kernel test robot June 26, 2020, 8:50 p.m. UTC | #1 
Hi Andrzej,

I love your patch! Perhaps something to improve:

[auto build test WARNING on 48778464bb7d346b47157d21ffde2af6b2d39110]

url:    https://github.com/0day-ci/linux/commits/Andrzej-Pietrasiewicz/Stop-monitoring-disabled-devices/20200627-013944
base:    48778464bb7d346b47157d21ffde2af6b2d39110
config: x86_64-randconfig-s022-20200624 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.2-dirty
        # save the attached .config to linux build tree
        make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)

>> drivers/thermal/thermal_core.c:462:5: sparse: sparse: symbol 'thermal_zone_device_set_mode' was not declared. Should it be static?

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
kernel test robot June 26, 2020, 8:55 p.m. UTC | #2 
Hi Andrzej,

I love your patch! Perhaps something to improve:

[auto build test WARNING on 48778464bb7d346b47157d21ffde2af6b2d39110]

url:    https://github.com/0day-ci/linux/commits/Andrzej-Pietrasiewicz/Stop-monitoring-disabled-devices/20200627-013944
base:    48778464bb7d346b47157d21ffde2af6b2d39110
config: arm-imx_v6_v7_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/thermal/thermal_core.c:462:5: warning: no previous prototype for 'thermal_zone_device_set_mode' [-Wmissing-prototypes]
     462 | int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +/thermal_zone_device_set_mode +462 drivers/thermal/thermal_core.c

   461	
 > 462	int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
   463					 enum thermal_device_mode mode)
   464	{
   465		int ret = 0;
   466	
   467		mutex_lock(&tz->lock);
   468	
   469		/* do nothing if mode isn't changing */
   470		if (mode == tz->mode) {
   471			mutex_unlock(&tz->lock);
   472	
   473			return ret;
   474		}
   475	
   476		if (tz->ops->set_mode)
   477			ret = tz->ops->set_mode(tz, mode);
   478	
   479		if (!ret)
   480			tz->mode = mode;
   481	
   482		mutex_unlock(&tz->lock);
   483	
   484		thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
   485	
   486		return ret;
   487	}
   488	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
Amit Kucheria June 29, 2020, 7:04 a.m. UTC | #3 
On Fri, Jun 26, 2020 at 11:08 PM Andrzej Pietrasiewicz
<andrzej.p@collabora.com> wrote:
>
> Prepare for making the drivers not access tzd's private members.
>
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> [EXPORT_SYMBOL -> EXPORT_SYMBOL_GPL]
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
>  drivers/thermal/thermal_core.c | 53 ++++++++++++++++++++++++++++++++++
>  include/linux/thermal.h        | 13 +++++++++
>  2 files changed, 66 insertions(+)
>
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index 14d3b1b94c4f..3181295075b9 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -459,6 +459,59 @@ static void thermal_zone_device_reset(struct thermal_zone_device *tz)
>         thermal_zone_device_init(tz);
>  }
>
> +int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
> +                                enum thermal_device_mode mode)

Should this be static?

> +{
> +       int ret = 0;
> +
> +       mutex_lock(&tz->lock);
> +
> +       /* do nothing if mode isn't changing */
> +       if (mode == tz->mode) {
> +               mutex_unlock(&tz->lock);
> +
> +               return ret;
> +       }
> +
> +       if (tz->ops->set_mode)
> +               ret = tz->ops->set_mode(tz, mode);
> +
> +       if (!ret)
> +               tz->mode = mode;
> +
> +       mutex_unlock(&tz->lock);
> +
> +       thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
> +
> +       return ret;
> +}
> +
> +int thermal_zone_device_enable(struct thermal_zone_device *tz)
> +{
> +       return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_ENABLED);
> +}
> +EXPORT_SYMBOL_GPL(thermal_zone_device_enable);
> +
> +int thermal_zone_device_disable(struct thermal_zone_device *tz)
> +{
> +       return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_DISABLED);
> +}
> +EXPORT_SYMBOL_GPL(thermal_zone_device_disable);
> +
> +int thermal_zone_device_is_enabled(struct thermal_zone_device *tz)
> +{
> +       enum thermal_device_mode mode;
> +
> +       mutex_lock(&tz->lock);
> +
> +       mode = tz->mode;
> +
> +       mutex_unlock(&tz->lock);
> +
> +       return mode == THERMAL_DEVICE_ENABLED;
> +}
> +EXPORT_SYMBOL_GPL(thermal_zone_device_is_enabled);
> +
>  void thermal_zone_device_update(struct thermal_zone_device *tz,
>                                 enum thermal_notify_event event)
>  {
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index a808f6fa2777..df013c39ba9b 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -416,6 +416,9 @@ int thermal_zone_get_offset(struct thermal_zone_device *tz);
>
>  void thermal_cdev_update(struct thermal_cooling_device *);
>  void thermal_notify_framework(struct thermal_zone_device *, int);
> +int thermal_zone_device_enable(struct thermal_zone_device *tz);
> +int thermal_zone_device_disable(struct thermal_zone_device *tz);
> +int thermal_zone_device_is_enabled(struct thermal_zone_device *tz);
>  #else
>  static inline struct thermal_zone_device *thermal_zone_device_register(
>         const char *type, int trips, int mask, void *devdata,
> @@ -463,6 +466,16 @@ static inline void thermal_cdev_update(struct thermal_cooling_device *cdev)
>  static inline void thermal_notify_framework(struct thermal_zone_device *tz,
>         int trip)
>  { }
> +
> +static inline int thermal_zone_device_enable(struct thermal_zone_device *tz)
> +{ return -ENODEV; }
> +
> +static inline int thermal_zone_device_disable(struct thermal_zone_device *tz)
> +{ return -ENODEV; }
> +
> +static inline int
> +thermal_zone_device_is_enabled(struct thermal_zone_device *tz)
> +{ return -ENODEV; }
>  #endif /* CONFIG_THERMAL */
>
>  #endif /* __THERMAL_H__ */
> --
> 2.17.1
>
Andrzej Pietrasiewicz June 29, 2020, 11:16 a.m. UTC | #4 
A respin of v5 with these changes:

v5..v6:
- staticized thermal_zone_device_set_mode() (kbuild test robot)

v4..v5:

- EXPORT_SYMBOL -> EXPORT_SYMBOL_GPL (Daniel)
- dropped unnecessary thermal_zone_device_enable() in int3400_thermal.c
and in thermal_of.c (Bartlomiej)

Andrzej Pietrasiewicz (11):
  acpi: thermal: Fix error handling in the register function
  thermal: Store thermal mode in a dedicated enum
  thermal: Add current mode to thermal zone device
  thermal: Store device mode in struct thermal_zone_device
  thermal: remove get_mode() operation of drivers
  thermal: Add mode helpers
  thermal: Use mode helpers in drivers
  thermal: Explicitly enable non-changing thermal zone devices
  thermal: core: Stop polling DISABLED thermal devices
  thermal: Simplify or eliminate unnecessary set_mode() methods
  thermal: Rename set_mode() to change_mode()

 drivers/acpi/thermal.c                        | 75 +++++----------
 .../ethernet/chelsio/cxgb4/cxgb4_thermal.c    |  8 ++
 .../ethernet/mellanox/mlxsw/core_thermal.c    | 91 ++++---------------
 drivers/net/wireless/intel/iwlwifi/mvm/tt.c   |  9 +-
 drivers/platform/x86/acerhdf.c                | 33 +++----
 drivers/platform/x86/intel_mid_thermal.c      |  6 ++
 drivers/power/supply/power_supply_core.c      |  9 +-
 drivers/thermal/armada_thermal.c              |  6 ++
 drivers/thermal/da9062-thermal.c              | 16 +---
 drivers/thermal/dove_thermal.c                |  6 ++
 drivers/thermal/hisi_thermal.c                |  6 +-
 drivers/thermal/imx_thermal.c                 | 57 ++++--------
 .../intel/int340x_thermal/int3400_thermal.c   | 38 ++------
 .../int340x_thermal/int340x_thermal_zone.c    |  5 +
 drivers/thermal/intel/intel_pch_thermal.c     |  5 +
 .../thermal/intel/intel_quark_dts_thermal.c   | 34 ++-----
 drivers/thermal/intel/intel_soc_dts_iosf.c    |  3 +
 drivers/thermal/intel/x86_pkg_temp_thermal.c  |  6 ++
 drivers/thermal/kirkwood_thermal.c            |  7 ++
 drivers/thermal/rcar_thermal.c                |  9 +-
 drivers/thermal/rockchip_thermal.c            |  6 +-
 drivers/thermal/spear_thermal.c               |  7 ++
 drivers/thermal/sprd_thermal.c                |  6 +-
 drivers/thermal/st/st_thermal.c               |  5 +
 drivers/thermal/thermal_core.c                | 76 ++++++++++++++--
 drivers/thermal/thermal_of.c                  | 41 +--------
 drivers/thermal/thermal_sysfs.c               | 37 +-------
 include/linux/thermal.h                       | 19 +++-
 28 files changed, 275 insertions(+), 351 deletions(-)


base-commit: 9ebcfadb0610322ac537dd7aa5d9cbc2b2894c68
diff mbox series

Patch

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 14d3b1b94c4f..3181295075b9 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -459,6 +459,59 @@  static void thermal_zone_device_reset(struct thermal_zone_device *tz)
 	thermal_zone_device_init(tz);
 }
 
+int thermal_zone_device_set_mode(struct thermal_zone_device *tz,
+				 enum thermal_device_mode mode)
+{
+	int ret = 0;
+
+	mutex_lock(&tz->lock);
+
+	/* do nothing if mode isn't changing */
+	if (mode == tz->mode) {
+		mutex_unlock(&tz->lock);
+
+		return ret;
+	}
+
+	if (tz->ops->set_mode)
+		ret = tz->ops->set_mode(tz, mode);
+
+	if (!ret)
+		tz->mode = mode;
+
+	mutex_unlock(&tz->lock);
+
+	thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
+
+	return ret;
+}
+
+int thermal_zone_device_enable(struct thermal_zone_device *tz)
+{
+	return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_ENABLED);
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_enable);
+
+int thermal_zone_device_disable(struct thermal_zone_device *tz)
+{
+	return thermal_zone_device_set_mode(tz, THERMAL_DEVICE_DISABLED);
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_disable);
+
+int thermal_zone_device_is_enabled(struct thermal_zone_device *tz)
+{
+	enum thermal_device_mode mode;
+
+	mutex_lock(&tz->lock);
+
+	mode = tz->mode;
+
+	mutex_unlock(&tz->lock);
+
+	return mode == THERMAL_DEVICE_ENABLED;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_is_enabled);
+
 void thermal_zone_device_update(struct thermal_zone_device *tz,
 				enum thermal_notify_event event)
 {
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index a808f6fa2777..df013c39ba9b 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -416,6 +416,9 @@  int thermal_zone_get_offset(struct thermal_zone_device *tz);
 
 void thermal_cdev_update(struct thermal_cooling_device *);
 void thermal_notify_framework(struct thermal_zone_device *, int);
+int thermal_zone_device_enable(struct thermal_zone_device *tz);
+int thermal_zone_device_disable(struct thermal_zone_device *tz);
+int thermal_zone_device_is_enabled(struct thermal_zone_device *tz);
 #else
 static inline struct thermal_zone_device *thermal_zone_device_register(
 	const char *type, int trips, int mask, void *devdata,
@@ -463,6 +466,16 @@  static inline void thermal_cdev_update(struct thermal_cooling_device *cdev)
 static inline void thermal_notify_framework(struct thermal_zone_device *tz,
 	int trip)
 { }
+
+static inline int thermal_zone_device_enable(struct thermal_zone_device *tz)
+{ return -ENODEV; }
+
+static inline int thermal_zone_device_disable(struct thermal_zone_device *tz)
+{ return -ENODEV; }
+
+static inline int
+thermal_zone_device_is_enabled(struct thermal_zone_device *tz)
+{ return -ENODEV; }
 #endif /* CONFIG_THERMAL */
 
 #endif /* __THERMAL_H__ */