Patch "regulator: Fix regulator_summary for deviceless consumers" has been added to the 4.9-stable tree

Patch "regulator: Fix regulator_summary for deviceless consumers" has been added to the 4.9-stable tree

[gregkh]

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

    regulator: Fix regulator_summary for deviceless consumers

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:
     regulator-fix-regulator_summary-for-deviceless-consumers.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 e42a46b6f52473661ad192f76a128a68fe301df4 Mon Sep 17 00:00:00 2001
From: Leonard Crestez <leonard.crestez@nxp.com>
Date: Tue, 14 Feb 2017 17:31:03 +0200
Subject: regulator: Fix regulator_summary for deviceless consumers

From: Leonard Crestez <leonard.crestez@nxp.com>

commit e42a46b6f52473661ad192f76a128a68fe301df4 upstream.

It is allowed to call regulator_get with a NULL dev argument
(_regulator_get explicitly checks for it) but this causes an error later
when printing /sys/kernel/debug/regulator_summary.

Fix this by explicitly handling "deviceless" consumers in the debugfs code.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/regulator/core.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -4357,12 +4357,13 @@ static void regulator_summary_show_subtr
 	seq_puts(s, "\n");
 
 	list_for_each_entry(consumer, &rdev->consumer_list, list) {
-		if (consumer->dev->class == &regulator_class)
+		if (consumer->dev && consumer->dev->class == &regulator_class)
 			continue;
 
 		seq_printf(s, "%*s%-*s ",
 			   (level + 1) * 3 + 1, "",
-			   30 - (level + 1) * 3, dev_name(consumer->dev));
+			   30 - (level + 1) * 3,
+			   consumer->dev ? dev_name(consumer->dev) : "deviceless");
 
 		switch (rdev->desc->type) {
 		case REGULATOR_VOLTAGE:


Patches currently in stable-queue which might be from leonard.crestez@nxp.com are

queue-4.9/regulator-fix-regulator_summary-for-deviceless-consumers.patch