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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-25 11:49:38 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-25 11:49:38 +0200 |
commit | 61c04572de404e52a655a36752e696bbcb483cf5 (patch) | |
tree | 48e3f1e1594d96910a41815f20653a6a1163282d | |
parent | Merge branch 'for-linus-4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel... (diff) | |
parent | thermal: imx: fix a possible NULL dereference (diff) | |
download | linux-61c04572de404e52a655a36752e696bbcb483cf5.tar.xz linux-61c04572de404e52a655a36752e696bbcb483cf5.zip |
Merge branch 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal fixes from Zhang Rui:
- Fix cpu_cooling to have separate thermal_cooling_device_ops
structures for cpus with and without power model, to avoid NULL
dereference in cpufreq_state2power. From Brendan Jackman.
- Fix a possible NULL dereference in imx_thermal driver. From Corentin
LABBE.
- Another two trivial fixes, one typo fix and one deleting module
owner. From Caesar Wang and Markus Elfring.
* 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
thermal: imx: fix a possible NULL dereference
thermal: trivial: fix the typo
Thermal-INT3406: Delete owner assignment
thermal: cpu_cooling: Fix NULL dereference in cpufreq_state2power
-rw-r--r-- | Documentation/devicetree/bindings/thermal/thermal.txt | 10 | ||||
-rw-r--r-- | drivers/thermal/cpu_cooling.c | 21 | ||||
-rw-r--r-- | drivers/thermal/imx_thermal.c | 4 | ||||
-rw-r--r-- | drivers/thermal/int340x_thermal/int3406_thermal.c | 1 |
4 files changed, 22 insertions, 14 deletions
diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt b/Documentation/devicetree/bindings/thermal/thermal.txt index 41b817f7b670..88b6ea1ad290 100644 --- a/Documentation/devicetree/bindings/thermal/thermal.txt +++ b/Documentation/devicetree/bindings/thermal/thermal.txt @@ -62,7 +62,7 @@ For more examples of cooling devices, refer to the example sections below. Required properties: - #cooling-cells: Used to provide cooling device specific information Type: unsigned while referring to it. Must be at least 2, in order - Size: one cell to specify minimum and maximum cooling state used + Size: one cell to specify minimum and maximum cooling state used in the reference. The first cell is the minimum cooling state requested and the second cell is the maximum cooling state requested in the reference. @@ -119,7 +119,7 @@ Required properties: Optional property: - contribution: The cooling contribution to the thermal zone of the Type: unsigned referred cooling device at the referred trip point. - Size: one cell The contribution is a ratio of the sum + Size: one cell The contribution is a ratio of the sum of all cooling contributions within a thermal zone. Note: Using the THERMAL_NO_LIMIT (-1UL) constant in the cooling-device phandle @@ -145,7 +145,7 @@ Required properties: Size: one cell - thermal-sensors: A list of thermal sensor phandles and sensor specifier - Type: list of used while monitoring the thermal zone. + Type: list of used while monitoring the thermal zone. phandles + sensor specifier @@ -473,7 +473,7 @@ thermal-zones { <&adc>; /* pcb north */ /* hotspot = 100 * bandgap - 120 * adc + 484 */ - coefficients = <100 -120 484>; + coefficients = <100 -120 484>; trips { ... @@ -502,7 +502,7 @@ from the ADC sensor. The binding would be then: thermal-sensors = <&adc>; /* hotspot = 1 * adc + 6000 */ - coefficients = <1 6000>; + coefficients = <1 6000>; (d) - Board thermal diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index 3788ed74c9ab..a32b41783b77 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -740,12 +740,22 @@ static int cpufreq_power2state(struct thermal_cooling_device *cdev, } /* Bind cpufreq callbacks to thermal cooling device ops */ + static struct thermal_cooling_device_ops cpufreq_cooling_ops = { .get_max_state = cpufreq_get_max_state, .get_cur_state = cpufreq_get_cur_state, .set_cur_state = cpufreq_set_cur_state, }; +static struct thermal_cooling_device_ops cpufreq_power_cooling_ops = { + .get_max_state = cpufreq_get_max_state, + .get_cur_state = cpufreq_get_cur_state, + .set_cur_state = cpufreq_set_cur_state, + .get_requested_power = cpufreq_get_requested_power, + .state2power = cpufreq_state2power, + .power2state = cpufreq_power2state, +}; + /* Notifier for cpufreq policy change */ static struct notifier_block thermal_cpufreq_notifier_block = { .notifier_call = cpufreq_thermal_notifier, @@ -795,6 +805,7 @@ __cpufreq_cooling_register(struct device_node *np, struct cpumask temp_mask; unsigned int freq, i, num_cpus; int ret; + struct thermal_cooling_device_ops *cooling_ops; cpumask_and(&temp_mask, clip_cpus, cpu_online_mask); policy = cpufreq_cpu_get(cpumask_first(&temp_mask)); @@ -850,10 +861,6 @@ __cpufreq_cooling_register(struct device_node *np, cpumask_copy(&cpufreq_dev->allowed_cpus, clip_cpus); if (capacitance) { - cpufreq_cooling_ops.get_requested_power = - cpufreq_get_requested_power; - cpufreq_cooling_ops.state2power = cpufreq_state2power; - cpufreq_cooling_ops.power2state = cpufreq_power2state; cpufreq_dev->plat_get_static_power = plat_static_func; ret = build_dyn_power_table(cpufreq_dev, capacitance); @@ -861,6 +868,10 @@ __cpufreq_cooling_register(struct device_node *np, cool_dev = ERR_PTR(ret); goto free_table; } + + cooling_ops = &cpufreq_power_cooling_ops; + } else { + cooling_ops = &cpufreq_cooling_ops; } ret = get_idr(&cpufreq_idr, &cpufreq_dev->id); @@ -885,7 +896,7 @@ __cpufreq_cooling_register(struct device_node *np, cpufreq_dev->id); cool_dev = thermal_of_cooling_device_register(np, dev_name, cpufreq_dev, - &cpufreq_cooling_ops); + cooling_ops); if (IS_ERR(cool_dev)) goto remove_idr; diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index c5547bd711db..e473548b5d28 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -471,8 +471,6 @@ MODULE_DEVICE_TABLE(of, of_imx_thermal_match); static int imx_thermal_probe(struct platform_device *pdev) { - const struct of_device_id *of_id = - of_match_device(of_imx_thermal_match, &pdev->dev); struct imx_thermal_data *data; struct regmap *map; int measure_freq; @@ -490,7 +488,7 @@ static int imx_thermal_probe(struct platform_device *pdev) } data->tempmon = map; - data->socdata = of_id->data; + data->socdata = of_device_get_match_data(&pdev->dev); /* make sure the IRQ flag is clear before enabling irq on i.MX6SX */ if (data->socdata->version == TEMPMON_IMX6SX) { diff --git a/drivers/thermal/int340x_thermal/int3406_thermal.c b/drivers/thermal/int340x_thermal/int3406_thermal.c index a578cd257db4..1891f34ab7fc 100644 --- a/drivers/thermal/int340x_thermal/int3406_thermal.c +++ b/drivers/thermal/int340x_thermal/int3406_thermal.c @@ -225,7 +225,6 @@ static struct platform_driver int3406_thermal_driver = { .remove = int3406_thermal_remove, .driver = { .name = "int3406 thermal", - .owner = THIS_MODULE, .acpi_match_table = int3406_thermal_match, }, }; |