Patch "genirq: Introduce irq_chip_set_type_parent() helper" has been added to the 4.1-stable tree

[gregkh at linuxfoundation.org]

This is a note to let you know that I've just added the patch titled

    genirq: Introduce irq_chip_set_type_parent() helper

to the 4.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     genirq-introduce-irq_chip_set_type_parent-helper.patch
and it can be found in the queue-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable at vger.kernel.org> know about it.


>From b7560de198222994374c1340a389f12d5efb244a Mon Sep 17 00:00:00 2001
From: Grygorii Strashko <grygorii.strashko at ti.com>
Date: Fri, 14 Aug 2015 15:20:26 +0300
Subject: genirq: Introduce irq_chip_set_type_parent() helper

From: Grygorii Strashko <grygorii.strashko at ti.com>

commit b7560de198222994374c1340a389f12d5efb244a upstream.

This helper is required for irq chips which do not implement a
irq_set_type callback and need to call down the irq domain hierarchy
for the actual trigger type change.

This helper is required to fix further wreckage caused by the
conversion of TI OMAP to hierarchical irq domains and therefor tagged
for stable.

[ tglx: Massaged changelog ]

Signed-off-by: Grygorii Strashko <grygorii.strashko at ti.com>
Cc: Sudeep Holla <sudeep.holla at arm.com>
Cc: <linux at arm.linux.org.uk>
Cc: <nsekhar at ti.com>
Cc: <jason at lakedaemon.net>
Cc: <balbi at ti.com>
Cc: <linux-arm-kernel at lists.infradead.org>
Cc: <tony at atomide.com>
Cc: <marc.zyngier at arm.com>
Cc: stable at vger.kernel.org # 4.1
Link: http://lkml.kernel.org/r/1439554830-19502-3-git-send-email-grygorii.strashko@ti.com
Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>

---
 include/linux/irq.h |    1 +
 kernel/irq/chip.c   |   17 +++++++++++++++++
 2 files changed, 18 insertions(+)

--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -467,6 +467,7 @@ extern int irq_chip_set_affinity_parent(
 					const struct cpumask *dest,
 					bool force);
 extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on);
+extern int irq_chip_set_type_parent(struct irq_data *data, unsigned int type);
 #endif
 
 /* Handling of unhandled and spurious interrupts: */
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -934,6 +934,23 @@ int irq_chip_set_affinity_parent(struct
 }
 
 /**
+ * irq_chip_set_type_parent - Set IRQ type on the parent interrupt
+ * @data:	Pointer to interrupt specific data
+ * @type:	IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h
+ *
+ * Conditional, as the underlying parent chip might not implement it.
+ */
+int irq_chip_set_type_parent(struct irq_data *data, unsigned int type)
+{
+	data = data->parent_data;
+
+	if (data->chip->irq_set_type)
+		return data->chip->irq_set_type(data, type);
+
+	return -ENOSYS;
+}
+
+/**
  * irq_chip_retrigger_hierarchy - Retrigger an interrupt in hardware
  * @data:	Pointer to interrupt specific data
  *


Patches currently in stable-queue which might be from grygorii.strashko at ti.com are

queue-4.1/irqchip-crossbar-restore-the-mask-on-suspend-behaviour.patch
queue-4.1/genirq-don-t-return-enosys-in-irq_chip_retrigger_hierarchy.patch
queue-4.1/irqchip-crossbar-restore-set_wake-functionality.patch
queue-4.1/irqchip-crossbar-restore-the-irq_set_type-mechanism.patch
queue-4.1/arm-dts-dra7-fix-broken-pbias-device-creation.patch
queue-4.1/genirq-introduce-irq_chip_set_type_parent-helper.patch
queue-4.1/arm-omap-wakeupgen-restore-the-irq_set_type-mechanism.patch