From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Tue, 25 Oct 2016 18:31:28 +0000 (+0200)
Subject: 4.7-stable patches
X-Git-Tag: v4.8.5~28
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=103f969d64d1893ce96546c52d35624e4fe773d2;p=thirdparty%2Fkernel%2Fstable-queue.git

4.7-stable patches

added patches:
	gpio-mpc8xxx-correct-irq-handler-function.patch
---

diff --git a/queue-4.7/gpio-mpc8xxx-correct-irq-handler-function.patch b/queue-4.7/gpio-mpc8xxx-correct-irq-handler-function.patch
new file mode 100644
index 00000000000..60be6970ad5
--- /dev/null
+++ b/queue-4.7/gpio-mpc8xxx-correct-irq-handler-function.patch
@@ -0,0 +1,38 @@
+From d71cf15b865bdd45925f7b094d169aaabd705145 Mon Sep 17 00:00:00 2001
+From: Liu Gang <Gang.Liu@nxp.com>
+Date: Fri, 21 Oct 2016 15:31:28 +0800
+Subject: gpio: mpc8xxx: Correct irq handler function
+
+From: Liu Gang <Gang.Liu@nxp.com>
+
+commit d71cf15b865bdd45925f7b094d169aaabd705145 upstream.
+
+From the beginning of the gpio-mpc8xxx.c, the "handle_level_irq"
+has being used to handle GPIO interrupts in the PowerPC/Layerscape
+platforms. But actually, almost all PowerPC/Layerscape platforms
+assert an interrupt request upon either a high-to-low change or
+any change on the state of the signal.
+
+So the "handle_level_irq" is not reasonable for PowerPC/Layerscape
+GPIO interrupt, it should be "handle_edge_irq". Otherwise the system
+may lost some interrupts from the PIN's state changes.
+
+Signed-off-by: Liu Gang <Gang.Liu@nxp.com>
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/gpio/gpio-mpc8xxx.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpio/gpio-mpc8xxx.c
++++ b/drivers/gpio/gpio-mpc8xxx.c
+@@ -239,7 +239,7 @@ static int mpc8xxx_gpio_irq_map(struct i
+ 				irq_hw_number_t hwirq)
+ {
+ 	irq_set_chip_data(irq, h->host_data);
+-	irq_set_chip_and_handler(irq, &mpc8xxx_irq_chip, handle_level_irq);
++	irq_set_chip_and_handler(irq, &mpc8xxx_irq_chip, handle_edge_irq);
+ 
+ 	return 0;
+ }