Linux 5.5.13

Linux 5.5.13

[Greg KH]

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I'm announcing the release of the 5.5.13 kernel.

All users of the 5.5 kernel series must upgrade.

The updated 5.5.y git tree can be found at:
	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.5.y
and can be browsed at the normal kernel.org git web browser:
	https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary

thanks,

greg k-h

------------

 Makefile               |    2 +-
 drivers/base/core.c    |    4 +++-
 include/linux/device.h |   11 +++++++++++
 3 files changed, 15 insertions(+), 2 deletions(-)

Greg Kroah-Hartman (1):
      Linux 5.5.13

Saravana Kannan (2):
      driver core: Add dev_has_sync_state()
      driver core: Skip unnecessary work when device doesn't have sync_state()


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Re: Linux 5.5.13

[Greg KH]

diff --git a/Makefile b/Makefile
index d962fe0f26ce..d1574c99f83c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 5
 PATCHLEVEL = 5
-SUBLEVEL = 12
+SUBLEVEL = 13
 EXTRAVERSION =
 NAME = Kleptomaniac Octopus
 
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 3306d5ae92a6..dbb0f9130f42 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -718,6 +718,8 @@ static void __device_links_queue_sync_state(struct device *dev,
 {
 	struct device_link *link;
 
+	if (!dev_has_sync_state(dev))
+		return;
 	if (dev->state_synced)
 		return;
 
@@ -819,7 +821,7 @@ late_initcall(sync_state_resume_initcall);
 
 static void __device_links_supplier_defer_sync(struct device *sup)
 {
-	if (list_empty(&sup->links.defer_sync))
+	if (list_empty(&sup->links.defer_sync) && dev_has_sync_state(sup))
 		list_add_tail(&sup->links.defer_sync, &deferred_sync);
 }
 
diff --git a/include/linux/device.h b/include/linux/device.h
index 96ff76731e93..50d97767d8d6 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1522,6 +1522,17 @@ static inline struct device_node *dev_of_node(struct device *dev)
 
 void driver_init(void);
 
+static inline bool dev_has_sync_state(struct device *dev)
+{
+	if (!dev)
+		return false;
+	if (dev->driver && dev->driver->sync_state)
+		return true;
+	if (dev->bus && dev->bus->sync_state)
+		return true;
+	return false;
+}
+
 /*
  * High level routines for use by the bus drivers
  */