From 9c6722d85e92233082da2b3623685bba54d6093e Mon Sep 17 00:00:00 2001
From: Kevin Hao <haokexin@gmail.com>
Date: Thu, 16 Jan 2020 17:50:03 +0800
Subject: [PATCH] gpio: Fix the no return statement warning
Patch-mainline: v5.6-rc1
Git-commit: 9c6722d85e92233082da2b3623685bba54d6093e
References: bsc#1178431

In commit 242587616710 ("gpiolib: Add support for the irqdomain which
doesn't use irq_fwspec as arg") we have changed the return type of
gpiochip_populate_parent_fwspec_twocell/fourcell() from void to void *,
but forgot to add a return statement for these two dummy functions.
Add "return NULL" to fix the build warnings.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Link: https://lore.kernel.org/r/20200116095003.30324-1-haokexin@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jessica Yu <jeyu@suse.de>
---
 include/linux/gpio/driver.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 9bb43467ed11..00d9f5b464c7 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -549,12 +549,14 @@ static inline void *gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *ch
 						    unsigned int parent_hwirq,
 						    unsigned int parent_type)
 {
+	return NULL;
 }
 
 static inline void *gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *chip,
 						     unsigned int parent_hwirq,
 						     unsigned int parent_type)
 {
+	return NULL;
 }
 
 #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */
-- 
2.16.4