Merge tag 'i2c-host-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-mergewindow

This release includes significant updates, with the primary
change being the renaming from "master/slave" to
"controller/target" to adhere to I2C v7 and SMBus 3.2 standards.

New Support:

 - Added support for Intel Arrow Lake-H.
 - Added I2C support in the Arioha SoC by linking the Mediatek
   I2C controller.

Cleanups:

 - Added the MODULE_DESCRIPTION() macro, resolving a modpost
   warning in the ALi 1563 Southbridge driver.
 - Constified the regmap_config declaration in the i2c-designware
   driver.
 - Improved the coding style in the Renesas R-Car driver by
   removing unnecessary semicolons after brackets.

General improvements:

 - In the OMAP device, replaced NOIRQ_SYSTEM_SLEEP_PM_OPS with
   RUNTIME_PM_OPS to enable waking up the controller during
   suspend() before suspend_noirq() kicks in.
 - Improved logging in the Xilinx driver.
 - Added a warning (WARN()) in the Renesas R-Car driver for
   spurious interrupts.

DTS Changes:

 - Removed address-cell and size-cell from the Atmel at91sam,
   nVidia Tegra 20, and Samsung S3c2410 devices.
 - Fixed Texas Instruments OMAP4 I2C controller to comply with
   the i2c-controller.yaml schema.
 - Improved indentation in DTS examples for several I2C devices.
 - Converted the NXP LPC1788 binding to the dt-schema.
 - Added documentation for the compatible string
   thead,th1520-i2c.
 - Added the "power-domains" property for the Meson I2C driver.

1 files changed, 23 insertions, 0 deletions

diff --git a/include/linux/closure.h b/include/linux/closure.h
index 99155df162d0..59b8c06b11ff 100644
--- a/include/linux/closure.h
+++ b/include/linux/closure.h
@@ -285,6 +285,21 @@ static inline void closure_get(struct closure *cl)
 }
 
 /**
+ * closure_get_not_zero
+ */
+static inline bool closure_get_not_zero(struct closure *cl)
+{
+	unsigned old = atomic_read(&cl->remaining);
+	do {
+		if (!(old & CLOSURE_REMAINING_MASK))
+			return false;
+
+	} while (!atomic_try_cmpxchg_acquire(&cl->remaining, &old, old + 1));
+
+	return true;
+}
+
+/**
  * closure_init - Initialize a closure, setting the refcount to 1
  * @cl:		closure to initialize
  * @parent:	parent of the new closure. cl will take a refcount on it for its
@@ -310,6 +325,12 @@ static inline void closure_init_stack(struct closure *cl)
 	atomic_set(&cl->remaining, CLOSURE_REMAINING_INITIALIZER);
 }
 
+static inline void closure_init_stack_release(struct closure *cl)
+{
+	memset(cl, 0, sizeof(struct closure));
+	atomic_set_release(&cl->remaining, CLOSURE_REMAINING_INITIALIZER);
+}
+
 /**
  * closure_wake_up - wake up all closures on a wait list,
  *		     with memory barrier
@@ -355,6 +376,8 @@ do {									\
  */
 #define closure_return(_cl)	continue_at((_cl), NULL, NULL)
 
+void closure_return_sync(struct closure *cl);
+
 /**
  * continue_at_nobarrier - jump to another function without barrier
  *