Patch "reset: Return -ENOTSUPP when not configured" has been added to the 4.7-stable tree

Patch "reset: Return -ENOTSUPP when not configured" has been added to the 4.7-stable tree

[gregkh]

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

    reset: Return -ENOTSUPP when not configured

to the 4.7-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:
     reset-return-enotsupp-when-not-configured.patch
and it can be found in the queue-4.7 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 168d7c4e8bb25c076ed8be67fcca84f5dcd0b2c6 Mon Sep 17 00:00:00 2001
From: John Youn <johnyoun@synopsys.com>
Date: Tue, 31 May 2016 16:55:01 -0700
Subject: reset: Return -ENOTSUPP when not configured

From: John Youn <johnyoun@synopsys.com>

commit 168d7c4e8bb25c076ed8be67fcca84f5dcd0b2c6 upstream.

Prior to commit 6c96f05c8bb8 ("reset: Make [of_]reset_control_get[_foo]
functions wrappers"), the "optional" functions returned -ENOTSUPP when
CONFIG_RESET_CONTROLLER was not set.

Revert back to the old behavior by changing the new
__devm_reset_control_get() and __of_reset_control_get() functions to
return ERR_PTR(-ENOTSUPP) when compiled without CONFIG_RESET_CONTROLLER.

Otherwise they will return -EINVAL causing users to think that an error
occurred when CONFIG_RESET_CONTROLLER is not set.

Fixes: 6c96f05c8bb8 ("reset: Make [of_]reset_control_get[_foo] functions wrappers")
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/linux/reset.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/include/linux/reset.h
+++ b/include/linux/reset.h
@@ -71,14 +71,14 @@ static inline struct reset_control *__of
 					struct device_node *node,
 					const char *id, int index, int shared)
 {
-	return ERR_PTR(-EINVAL);
+	return ERR_PTR(-ENOTSUPP);
 }
 
 static inline struct reset_control *__devm_reset_control_get(
 					struct device *dev,
 					const char *id, int index, int shared)
 {
-	return ERR_PTR(-EINVAL);
+	return ERR_PTR(-ENOTSUPP);
 }
 
 #endif /* CONFIG_RESET_CONTROLLER */


Patches currently in stable-queue which might be from johnyoun@synopsys.com are

queue-4.7/reset-return-enotsupp-when-not-configured.patch