Patch "ath9k: fix ath9k_hw_gpio_get() to return 0 or 1 on success" has been added to the 4.9-stable tree

[<gregkh@linuxfoundation.org>]

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

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

to the 4.9-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:
     ath9k-fix-ath9k_hw_gpio_get-to-return-0-or-1-on-success.patch
and it can be found in the queue-4.9 subdirectory.

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


>From 91851cc7a939039bd401adb6ca3da4402bec1d0c Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Tue, 15 Nov 2016 18:47:21 +0100
Subject: ath9k: fix ath9k_hw_gpio_get() to return 0 or 1 on success

From: Matthias Schiffer <mschiffer@universe-factory.net>

commit 91851cc7a939039bd401adb6ca3da4402bec1d0c upstream.

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(). This doesn't fix any known bug in mainline at the
moment, but should be fixed anyway.

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@universe-factory.net>
[kvalo@qca.qualcomm.com: mention that doesn't fix any known bug]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 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
@@ -2792,7 +2792,7 @@ u32 ath9k_hw_gpio_get(struct ath_hw *ah,
 		WARN_ON(1);
 	}
 
-	return val;
+	return !!val;
 }
 EXPORT_SYMBOL(ath9k_hw_gpio_get);
 


Patches currently in stable-queue which might be from mschiffer@universe-factory.net are

queue-4.9/ath9k-fix-ath9k_hw_gpio_get-to-return-0-or-1-on-success.patch