From 5f68d0785e5258ab5e6df9e351929973a0742c1a Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Wed, 1 Mar 2023 21:14:30 +0100 Subject: thermal/core: Use the thermal zone 'devdata' accessor in thermal located drivers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The thermal zone device structure is exposed to the different drivers and obviously they access the internals while that should be restricted to the core thermal code. In order to self-encapsulate the thermal core code, we need to prevent the drivers accessing directly the thermal zone structure and provide accessor functions to deal with. Use the devdata accessor introduced in the previous patch. No functional changes intended. Signed-off-by: Daniel Lezcano Reviewed-by: Niklas Söderlund #R-Car Acked-by: Mark Brown Reviewed-by: AngeloGioacchino Del Regno #MediaTek auxadc and lvts Reviewed-by: Balsam CHIHI #Mediatek lvts Reviewed-by: Adam Ward #da9062 Reviewed-by: Baolin Wang #spread Acked-by: Jernej Skrabec #sun8i_thermal Acked-by: Rafael J. Wysocki Acked-by: Florian Fainelli #Broadcom Reviewed-by: Dhruva Gole # K3 bandgap Acked-by: Linus Walleij Acked-by: Heiko Stuebner #rockchip Reviewed-by: Kunihiko Hayashi #uniphier Signed-off-by: Rafael J. Wysocki --- drivers/thermal/intel/int340x_thermal/int3400_thermal.c | 2 +- .../thermal/intel/int340x_thermal/int340x_thermal_zone.c | 4 ++-- .../intel/int340x_thermal/processor_thermal_device_pci.c | 4 ++-- drivers/thermal/intel/intel_pch_thermal.c | 2 +- drivers/thermal/intel/intel_quark_dts_thermal.c | 6 +++--- drivers/thermal/intel/intel_soc_dts_iosf.c | 13 +++++-------- drivers/thermal/intel/x86_pkg_temp_thermal.c | 4 ++-- 7 files changed, 16 insertions(+), 19 deletions(-) (limited to 'drivers/thermal/intel') diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c index d0295123cc3e..810231b59dcd 100644 --- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c +++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c @@ -497,7 +497,7 @@ static int int3400_thermal_get_temp(struct thermal_zone_device *thermal, static int int3400_thermal_change_mode(struct thermal_zone_device *thermal, enum thermal_device_mode mode) { - struct int3400_thermal_priv *priv = thermal->devdata; + struct int3400_thermal_priv *priv = thermal_zone_device_priv(thermal); int result = 0; if (!priv) diff --git a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c index 00665967ca52..89cf007146ea 100644 --- a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c +++ b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c @@ -14,7 +14,7 @@ static int int340x_thermal_get_zone_temp(struct thermal_zone_device *zone, int *temp) { - struct int34x_thermal_zone *d = zone->devdata; + struct int34x_thermal_zone *d = thermal_zone_device_priv(zone); unsigned long long tmp; acpi_status status; @@ -41,7 +41,7 @@ static int int340x_thermal_get_zone_temp(struct thermal_zone_device *zone, static int int340x_thermal_set_trip_temp(struct thermal_zone_device *zone, int trip, int temp) { - struct int34x_thermal_zone *d = zone->devdata; + struct int34x_thermal_zone *d = thermal_zone_device_priv(zone); char name[] = {'P', 'A', 'T', '0' + trip, '\0'}; acpi_status status; diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c index 40725cbc6eb0..0404d4db70f0 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c @@ -135,7 +135,7 @@ static irqreturn_t proc_thermal_irq_handler(int irq, void *devid) static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp) { - struct proc_thermal_pci *pci_info = tzd->devdata; + struct proc_thermal_pci *pci_info = thermal_zone_device_priv(tzd); u32 _temp; proc_thermal_mmio_read(pci_info, PROC_THERMAL_MMIO_PKG_TEMP, &_temp); @@ -146,7 +146,7 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp) static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp) { - struct proc_thermal_pci *pci_info = tzd->devdata; + struct proc_thermal_pci *pci_info = thermal_zone_device_priv(tzd); int tjmax, _temp; if (temp <= 0) { diff --git a/drivers/thermal/intel/intel_pch_thermal.c b/drivers/thermal/intel/intel_pch_thermal.c index b855d031a855..dce50d239357 100644 --- a/drivers/thermal/intel/intel_pch_thermal.c +++ b/drivers/thermal/intel/intel_pch_thermal.c @@ -119,7 +119,7 @@ static int pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd, int trip) static int pch_thermal_get_temp(struct thermal_zone_device *tzd, int *temp) { - struct pch_thermal_device *ptd = tzd->devdata; + struct pch_thermal_device *ptd = thermal_zone_device_priv(tzd); *temp = GET_WPT_TEMP(WPT_TEMP_TSR & readw(ptd->hw_base + WPT_TEMP)); return 0; diff --git a/drivers/thermal/intel/intel_quark_dts_thermal.c b/drivers/thermal/intel/intel_quark_dts_thermal.c index ffdc95047838..646ca8bd40a9 100644 --- a/drivers/thermal/intel/intel_quark_dts_thermal.c +++ b/drivers/thermal/intel/intel_quark_dts_thermal.c @@ -120,7 +120,7 @@ static DEFINE_MUTEX(dts_update_mutex); static int soc_dts_enable(struct thermal_zone_device *tzd) { u32 out; - struct soc_sensor_entry *aux_entry = tzd->devdata; + struct soc_sensor_entry *aux_entry = thermal_zone_device_priv(tzd); int ret; ret = iosf_mbi_read(QRK_MBI_UNIT_RMU, MBI_REG_READ, @@ -148,7 +148,7 @@ static int soc_dts_enable(struct thermal_zone_device *tzd) static int soc_dts_disable(struct thermal_zone_device *tzd) { u32 out; - struct soc_sensor_entry *aux_entry = tzd->devdata; + struct soc_sensor_entry *aux_entry = thermal_zone_device_priv(tzd); int ret; ret = iosf_mbi_read(QRK_MBI_UNIT_RMU, MBI_REG_READ, @@ -250,7 +250,7 @@ failed: static inline int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp) { - return update_trip_temp(tzd->devdata, trip, temp); + return update_trip_temp(thermal_zone_device_priv(tzd), trip, temp); } static int sys_get_curr_temp(struct thermal_zone_device *tzd, diff --git a/drivers/thermal/intel/intel_soc_dts_iosf.c b/drivers/thermal/intel/intel_soc_dts_iosf.c index 8c26f7b2316b..f99dc7e4ae89 100644 --- a/drivers/thermal/intel/intel_soc_dts_iosf.c +++ b/drivers/thermal/intel/intel_soc_dts_iosf.c @@ -54,7 +54,7 @@ static int sys_get_trip_temp(struct thermal_zone_device *tzd, int trip, struct intel_soc_dts_sensor_entry *dts; struct intel_soc_dts_sensors *sensors; - dts = tzd->devdata; + dts = thermal_zone_device_priv(tzd); sensors = dts->sensors; mutex_lock(&sensors->dts_update_lock); status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ, @@ -168,7 +168,7 @@ err_restore_ptps: static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp) { - struct intel_soc_dts_sensor_entry *dts = tzd->devdata; + struct intel_soc_dts_sensor_entry *dts = thermal_zone_device_priv(tzd); struct intel_soc_dts_sensors *sensors = dts->sensors; int status; @@ -176,7 +176,7 @@ static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, return -EINVAL; mutex_lock(&sensors->dts_update_lock); - status = update_trip_temp(tzd->devdata, trip, temp, + status = update_trip_temp(dts, trip, temp, dts->trip_types[trip]); mutex_unlock(&sensors->dts_update_lock); @@ -186,9 +186,7 @@ static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, static int sys_get_trip_type(struct thermal_zone_device *tzd, int trip, enum thermal_trip_type *type) { - struct intel_soc_dts_sensor_entry *dts; - - dts = tzd->devdata; + struct intel_soc_dts_sensor_entry *dts = thermal_zone_device_priv(tzd); *type = dts->trip_types[trip]; @@ -200,11 +198,10 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd, { int status; u32 out; - struct intel_soc_dts_sensor_entry *dts; + struct intel_soc_dts_sensor_entry *dts = thermal_zone_device_priv(tzd); struct intel_soc_dts_sensors *sensors; unsigned long raw; - dts = tzd->devdata; sensors = dts->sensors; status = iosf_mbi_read(BT_MBI_UNIT_PMC, MBI_REG_READ, SOC_DTS_OFFSET_TEMP, &out); diff --git a/drivers/thermal/intel/x86_pkg_temp_thermal.c b/drivers/thermal/intel/x86_pkg_temp_thermal.c index 1c2de84742df..c4ec314441be 100644 --- a/drivers/thermal/intel/x86_pkg_temp_thermal.c +++ b/drivers/thermal/intel/x86_pkg_temp_thermal.c @@ -107,7 +107,7 @@ static struct zone_device *pkg_temp_thermal_get_dev(unsigned int cpu) static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp) { - struct zone_device *zonedev = tzd->devdata; + struct zone_device *zonedev = thermal_zone_device_priv(tzd); int val; val = intel_tcc_get_temp(zonedev->cpu, true); @@ -122,7 +122,7 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp) static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp) { - struct zone_device *zonedev = tzd->devdata; + struct zone_device *zonedev = thermal_zone_device_priv(tzd); u32 l, h, mask, shift, intr; int tj_max, ret; -- cgit From 2a96243e22f880ad53a977e09680aee276dc50b5 Mon Sep 17 00:00:00 2001 From: Zhang Rui Date: Wed, 8 Mar 2023 11:07:11 +0800 Subject: thermal: intel: x86_pkg_temp_thermal: Add lower bound check for sysfs input When setting a trip point temperature from sysfs, there is an upper bound check on the user input, but no lower bound check. As hardware register has 7 bits for a trip point temperature, the offset to tj_max of the input temperature must be equal to/less than 0x7f. Or else, 1. bogus temperature is updated into the trip temperature bits. 2. the upper bits of the register can be polluted. For example, $ rdmsr 0x1b2 2000003 $ echo -180000 > /sys/class/thermal/thermal_zone1/trip_point_1_temp $ rdmsr 0x1b2 3980003 Not only the trip point temp is set to 76C on this platform (tj_max is 100), the Power Notification (Bit 24) is also enabled erronously. Fix the problem by adding lower bound check for sysfs input. Reported-by: Dan Carpenter Link: https://lore.kernel.org/all/add7a378-4d50-4ba1-81d3-a0c17db25a0b@kili.mountain/ Signed-off-by: Zhang Rui Signed-off-by: Rafael J. Wysocki --- drivers/thermal/intel/x86_pkg_temp_thermal.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/thermal/intel') diff --git a/drivers/thermal/intel/x86_pkg_temp_thermal.c b/drivers/thermal/intel/x86_pkg_temp_thermal.c index 1c2de84742df..128ee02596ed 100644 --- a/drivers/thermal/intel/x86_pkg_temp_thermal.c +++ b/drivers/thermal/intel/x86_pkg_temp_thermal.c @@ -124,14 +124,16 @@ sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp) { struct zone_device *zonedev = tzd->devdata; u32 l, h, mask, shift, intr; - int tj_max, ret; + int tj_max, val, ret; tj_max = intel_tcc_get_tjmax(zonedev->cpu); if (tj_max < 0) return tj_max; tj_max *= 1000; - if (trip >= MAX_NUMBER_OF_TRIPS || temp >= tj_max) + val = (tj_max - temp)/1000; + + if (trip >= MAX_NUMBER_OF_TRIPS || val < 0 || val > 0x7f) return -EINVAL; ret = rdmsr_on_cpu(zonedev->cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT, @@ -156,7 +158,7 @@ sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp) if (!temp) { l &= ~intr; } else { - l |= (tj_max - temp)/1000 << shift; + l |= val << shift; l |= intr; } -- cgit