[PATCH] hwmon: pmbus: pxe1610: don't bail out when not all pages are active

[Paul Fertser]

Certain VRs might be configured to use only the first output channel and
so the mode for the second will be 0. Handle this gracefully.

Fixes: b9fa0a3acfd8 ("hwmon: (pmbus/core) Add support for vid mode detection 
per page bases")
Signed-off-by: Paul Fertser <fercer...@gmail.com>
---
 drivers/hwmon/pmbus/pxe1610.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/pmbus/pxe1610.c b/drivers/hwmon/pmbus/pxe1610.c
index 517584cff3de..ff6f6e05923b 100644
--- a/drivers/hwmon/pmbus/pxe1610.c
+++ b/drivers/hwmon/pmbus/pxe1610.c
@@ -41,7 +41,16 @@ static int pxe1610_identify(struct i2c_client *client,
                                info->vrm_version[i] = vr13;
                                break;
                        default:
-                               return -ENODEV;
+                               /*
+                                * If prior pages are available limit operation
+                                * to them
+                                */
+                               if (i != 0) {
+                                       info->pages = i;
+                                       return 0;
+                               } else {
+                                       return -ENODEV;
+                               }
                        }
                }
        }
-- 
2.17.1