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regulator: Fix regulator_summary for deviceless consumers

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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>
This commit is contained in:
Leonard Crestez 2017-02-14 17:31:03 +02:00 committed by Greg Kroah-Hartman
parent 272d60bfce
commit 5cc0cd0e3a
1 changed files with 3 additions and 2 deletions
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5
drivers/regulator/core.c
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@ -4273,12 +4273,13 @@ static void regulator_summary_show_subtree(struct seq_file *s,
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: