[openwrt/openwrt] mvebu: gpio-mvebu IRQ index error kernel backport

[LEDE Commits]

ynezz pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/a9deace10c0f4c9e82091f579e96aa83f5b7aeb6

commit a9deace10c0f4c9e82091f579e96aa83f5b7aeb6
Author: Daniel González Cabanelas <dgcbueu at gmail.com>
AuthorDate: Tue Oct 27 18:39:40 2020 +0100

    mvebu: gpio-mvebu IRQ index error kernel backport
    
    Backport the upstream kernel fix 525b0858ff to get rid of the kernel
    messages:
    
    mvebu-gpio xxxxxx.gpio: IRQ index 3 not found
    
    Signed-off-by: Daniel González Cabanelas <dgcbueu at gmail.com>
---
 ...vebu-avoid_error_message_for_optional_IRQ.patch | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/target/linux/mvebu/patches-5.4/007-gpio-mvebu-avoid_error_message_for_optional_IRQ.patch b/target/linux/mvebu/patches-5.4/007-gpio-mvebu-avoid_error_message_for_optional_IRQ.patch
new file mode 100644
index 0000000000..8ef2897c97
--- /dev/null
+++ b/target/linux/mvebu/patches-5.4/007-gpio-mvebu-avoid_error_message_for_optional_IRQ.patch
@@ -0,0 +1,33 @@
+From 525b0858ff2fdb78defec2d4d6d63baaa423d5fd Mon Sep 17 00:00:00 2001
+From: Chris Packham <chris.packham at alliedtelesis.co.nz>
+Date: Fri, 13 Mar 2020 16:42:44 +1300
+Subject: [PATCH] gpio: mvebu: avoid error message for optional IRQ
+
+platform_get_irq() will generate an error message if the requested irq
+is not present
+
+  mvebu-gpio f1010140.gpio: IRQ index 3 not found
+
+use platform_get_irq_optional() to avoid the error message being
+generated.
+
+Signed-off-by: Chris Packham <chris.packham at alliedtelesis.co.nz>
+Acked-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
+Signed-off-by: Bartosz Golaszewski <bgolaszewski at baylibre.com>
+---
+ drivers/gpio/gpio-mvebu.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c
+index d2b999c7987f1..3c9f4fb3d5a28 100644
+--- a/drivers/gpio/gpio-mvebu.c
++++ b/drivers/gpio/gpio-mvebu.c
+@@ -1245,7 +1245,7 @@ static int mvebu_gpio_probe(struct platform_device *pdev)
+ 	 * pins.
+ 	 */
+ 	for (i = 0; i < 4; i++) {
+-		int irq = platform_get_irq(pdev, i);
++		int irq = platform_get_irq_optional(pdev, i);
+ 
+ 		if (irq < 0)
+ 			continue;