[source] ath9k: fix ath9k_hw_gpio_get() to return 0 or 1 on success

[LEDE Commits]

neoraider pushed a commit to source.git, branch master:
https://git.lede-project.org/a250556d27556ec94a8d800fd27be40c2de8139c

commit a250556d27556ec94a8d800fd27be40c2de8139c
Author: Matthias Schiffer <mschiffer at universe-factory.net>
AuthorDate: Tue Nov 15 18:54:05 2016 +0100

    ath9k: fix ath9k_hw_gpio_get() to return 0 or 1 on success
    
    Signed-off-by: Matthias Schiffer <mschiffer at universe-factory.net>
---
 ...th9k_hw_gpio_get-to-return-0-or-1-on-succ.patch | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/package/kernel/mac80211/patches/325-ath9k-fix-ath9k_hw_gpio_get-to-return-0-or-1-on-succ.patch b/package/kernel/mac80211/patches/325-ath9k-fix-ath9k_hw_gpio_get-to-return-0-or-1-on-succ.patch
new file mode 100644
index 0000000..a966a16
--- /dev/null
+++ b/package/kernel/mac80211/patches/325-ath9k-fix-ath9k_hw_gpio_get-to-return-0-or-1-on-succ.patch
@@ -0,0 +1,29 @@
+From: Matthias Schiffer <mschiffer at universe-factory.net>
+Date: Tue, 15 Nov 2016 16:08:29 +0100
+Subject: [PATCH] ath9k: fix ath9k_hw_gpio_get() to return 0 or 1 on success
+
+Commit b2d70d4944c1 ("ath9k: make GPIO API to support both of WMAC and
+SOC") refactored ath9k_hw_gpio_get() to support both WMAC and SOC GPIOs,
+changing the return on success from 1 to BIT(gpio). This broke some callers
+like ath_is_rfkill_set().
+
+Instead of fixing all callers, change ath9k_hw_gpio_get() back to only
+return 0 or 1.
+
+Fixes: b2d70d4944c1 ("ath9k: make GPIO API to support both of WMAC and SOC")
+Signed-off-by: Matthias Schiffer <mschiffer at universe-factory.net>
+---
+ drivers/net/wireless/ath/ath9k/hw.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -2812,7 +2812,7 @@ u32 ath9k_hw_gpio_get(struct ath_hw *ah,
+ 		WARN_ON(1);
+ 	}
+ 
+-	return val;
++	return !!val;
+ }
+ EXPORT_SYMBOL(ath9k_hw_gpio_get);
+