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authorLinus Torvalds <torvalds@linux-foundation.org>2021-09-26 12:11:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-26 12:11:58 -0700
commit299d6e47e8f8665904b9c8c321edb3876c92f68b (patch)
tree621925e3b7c34e59b662f1bbebb8c4b399dd1ec2 /drivers
parent5bb7b2107f8c8e97750a36a723f3f74f819f6ff1 (diff)
parentcf96921876dcee4d6ac07b9de470368a075ba9ad (diff)
downloadlinux-299d6e47e8f8665904b9c8c321edb3876c92f68b.tar.bz2
Merge tag 'thermal-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux
Pull thermal fixes from Daniel Lezcano: - Fix thermal shutdown after a suspend/resume due to a wrong TCC value restored on Intel platform (Antoine Tenart) - Fix potential buffer overflow when building the list of policies. The buffer size is not updated after writing to it (Dan Carpenter) - Fix wrong check against IS_ERR instead of NULL (Ansuel Smith) * tag 'thermal-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: thermal/drivers/tsens: Fix wrong check for tzd in irq handlers thermal/core: Potential buffer overflow in thermal_build_list_of_policies() thermal/drivers/int340x: Do not set a wrong tcc offset on resume
Diffstat (limited to 'drivers')
-rw-r--r--drivers/thermal/intel/int340x_thermal/processor_thermal_device.c5
-rw-r--r--drivers/thermal/qcom/tsens.c4
-rw-r--r--drivers/thermal/thermal_core.c7
3 files changed, 8 insertions, 8 deletions
diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
index 0f0038af2ad4..fb64acfd5e07 100644
--- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
+++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
@@ -107,7 +107,7 @@ static int tcc_offset_update(unsigned int tcc)
return 0;
}
-static unsigned int tcc_offset_save;
+static int tcc_offset_save = -1;
static ssize_t tcc_offset_degree_celsius_store(struct device *dev,
struct device_attribute *attr, const char *buf,
@@ -352,7 +352,8 @@ int proc_thermal_resume(struct device *dev)
proc_dev = dev_get_drvdata(dev);
proc_thermal_read_ppcc(proc_dev);
- tcc_offset_update(tcc_offset_save);
+ if (tcc_offset_save >= 0)
+ tcc_offset_update(tcc_offset_save);
return 0;
}
diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
index 4c7ebd1d3f9c..b1162e566a70 100644
--- a/drivers/thermal/qcom/tsens.c
+++ b/drivers/thermal/qcom/tsens.c
@@ -417,7 +417,7 @@ static irqreturn_t tsens_critical_irq_thread(int irq, void *data)
const struct tsens_sensor *s = &priv->sensor[i];
u32 hw_id = s->hw_id;
- if (IS_ERR(s->tzd))
+ if (!s->tzd)
continue;
if (!tsens_threshold_violated(priv, hw_id, &d))
continue;
@@ -467,7 +467,7 @@ static irqreturn_t tsens_irq_thread(int irq, void *data)
const struct tsens_sensor *s = &priv->sensor[i];
u32 hw_id = s->hw_id;
- if (IS_ERR(s->tzd))
+ if (!s->tzd)
continue;
if (!tsens_threshold_violated(priv, hw_id, &d))
continue;
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 97ef9b040b84..51374f4e1cca 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -222,15 +222,14 @@ int thermal_build_list_of_policies(char *buf)
{
struct thermal_governor *pos;
ssize_t count = 0;
- ssize_t size = PAGE_SIZE;
mutex_lock(&thermal_governor_lock);
list_for_each_entry(pos, &thermal_governor_list, governor_list) {
- size = PAGE_SIZE - count;
- count += scnprintf(buf + count, size, "%s ", pos->name);
+ count += scnprintf(buf + count, PAGE_SIZE - count, "%s ",
+ pos->name);
}
- count += scnprintf(buf + count, size, "\n");
+ count += scnprintf(buf + count, PAGE_SIZE - count, "\n");
mutex_unlock(&thermal_governor_lock);