[PATCH 3.16 033/366] hwmon: (pmbus/max8688) Accept negative page register values

Ben Hutchings
2018-10-14T23:28:02Z

From: Guenter Roeck <linux@roeck-us.net>

commit a46f8cd696624ef757be0311eb28f119c36778e8 upstream.

A negative page register value means that no page needs to be
selected. This is used by status register evaluations and needs
to be accepted.

Fixes: da8e48ab483e1 ("hwmon: (pmbus) Always call _pmbus_read_byte in core driver")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/hwmon/pmbus/max8688.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/hwmon/pmbus/max8688.c
+++ b/drivers/hwmon/pmbus/max8688.c
@@ -44,7 +44,7 @@ static int max8688_read_word_data(struct
{
int ret;

- if (page)
+ if (page > 0)
return -ENXIO;

switch (reg) {