4.19-stable patches

added patches:
	thermal-intel-int340x-add-locking-to-int340x_thermal_get_trip_type.patch

diff --git a/queue-4.19/series b/queue-4.19/series
index e187816bd94c45641d62008fa795334f8f0fde16..9a2a67ea2ee971d706226a932f441cae657e6b14 100644 (file)
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -38,3 +38,4 @@ mm-swapfile-add-cond_resched-in-get_swap_pages.patch
 squashfs-fix-handling-and-sanity-checking-of-xattr_ids-count.patch
 serial-8250_dma-fix-dma-rx-completion-race.patch
 serial-8250_dma-fix-dma-rx-rearm-race.patch
+thermal-intel-int340x-add-locking-to-int340x_thermal_get_trip_type.patch

diff --git a/queue-4.19/thermal-intel-int340x-add-locking-to-int340x_thermal_get_trip_type.patch b/queue-4.19/thermal-intel-int340x-add-locking-to-int340x_thermal_get_trip_type.patch
new file mode 100644 (file)
index 0000000..b82be33
--- /dev/null
+++ b/queue-4.19/thermal-intel-int340x-add-locking-to-int340x_thermal_get_trip_type.patch
@@ -0,0 +1,52 @@
+From acd7e9ee57c880b99671dd99680cb707b7b5b0ee Mon Sep 17 00:00:00 2001
+From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
+Date: Wed, 25 Jan 2023 13:17:42 +0100
+Subject: thermal: intel: int340x: Add locking to int340x_thermal_get_trip_type()
+
+From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+
+commit acd7e9ee57c880b99671dd99680cb707b7b5b0ee upstream.
+
+In order to prevent int340x_thermal_get_trip_type() from possibly
+racing with int340x_thermal_read_trips() invoked by int3403_notify()
+add locking to it in analogy with int340x_thermal_get_trip_temp().
+
+Fixes: 6757a7abe47b ("thermal: intel: int340x: Protect trip temperature from concurrent updates")
+Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/thermal/int340x_thermal/int340x_thermal_zone.c |   10 +++++++---
+ 1 file changed, 7 insertions(+), 3 deletions(-)
+
+--- a/drivers/thermal/int340x_thermal/int340x_thermal_zone.c
++++ b/drivers/thermal/int340x_thermal/int340x_thermal_zone.c
+@@ -89,11 +89,13 @@ static int int340x_thermal_get_trip_type
+                                        enum thermal_trip_type *type)
+ {
+       struct int34x_thermal_zone *d = zone->devdata;
+-      int i;
++      int i, ret = 0;
+ 
+       if (d->override_ops && d->override_ops->get_trip_type)
+               return d->override_ops->get_trip_type(zone, trip, type);
+ 
++      mutex_lock(&d->trip_mutex);
++
+       if (trip < d->aux_trip_nr)
+               *type = THERMAL_TRIP_PASSIVE;
+       else if (trip == d->crt_trip_id)
+@@ -111,10 +113,12 @@ static int int340x_thermal_get_trip_type
+                       }
+               }
+               if (i == INT340X_THERMAL_MAX_ACT_TRIP_COUNT)
+-                      return -EINVAL;
++                      ret = -EINVAL;
+       }
+ 
+-      return 0;
++      mutex_unlock(&d->trip_mutex);
++
++      return ret;
+ }
+ 
+ static int int340x_thermal_set_trip_temp(struct thermal_zone_device *zone,