Patch "i2c: mux: reg: wrong condition checked for of_address_to_resource return value" has been added to the 4.4-stable tree

Patch "i2c: mux: reg: wrong condition checked for of_address_to_resource return value" has been added to the 4.4-stable tree

[gregkh]

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

    i2c: mux: reg: wrong condition checked for of_address_to_resource return value

to the 4.4-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:
     i2c-mux-reg-wrong-condition-checked-for-of_address_to_resource-return-value.patch
and it can be found in the queue-4.4 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 22ebf00eb56fe77922de8138aa9af9996582c2b3 Mon Sep 17 00:00:00 2001
From: Lukasz Gemborowski <lukasz.gemborowski@nokia.com>
Date: Mon, 27 Jun 2016 12:57:47 +0200
Subject: i2c: mux: reg: wrong condition checked for of_address_to_resource return value

From: Lukasz Gemborowski <lukasz.gemborowski@nokia.com>

commit 22ebf00eb56fe77922de8138aa9af9996582c2b3 upstream.

of_address_to_resource return 0 on successful call but
devm_ioremap_resource is called only if it returns non-zero value

Signed-off-by: Lukasz Gemborowski <lukasz.gemborowski@nokia.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/i2c/muxes/i2c-mux-reg.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/i2c/muxes/i2c-mux-reg.c
+++ b/drivers/i2c/muxes/i2c-mux-reg.c
@@ -150,7 +150,7 @@ static int i2c_mux_reg_probe_dt(struct r
 		mux->data.idle_in_use = true;
 
 	/* map address from "reg" if exists */
-	if (of_address_to_resource(np, 0, &res)) {
+	if (of_address_to_resource(np, 0, &res) == 0) {
 		mux->data.reg_size = resource_size(&res);
 		mux->data.reg = devm_ioremap_resource(&pdev->dev, &res);
 		if (IS_ERR(mux->data.reg))


Patches currently in stable-queue which might be from lukasz.gemborowski@nokia.com are

queue-4.4/i2c-mux-reg-wrong-condition-checked-for-of_address_to_resource-return-value.patch