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* [PATCH] hwmon: pmbus: pxe1610: don't bail out when not all pages are active
@ 2021-04-15 13:34 Paul Fertser
  2021-04-15 15:18 ` Guenter Roeck
  0 siblings, 1 reply; 4+ messages in thread
From: Paul Fertser @ 2021-04-15 13:34 UTC (permalink / raw)
  To: linux-hwmon
  Cc: Paul Fertser, Guenter Roeck, Jean Delvare, Vadim Pasternak, linux-kernel

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 <fercerpav@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


^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2021-04-16 14:14 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2021-04-15 13:34 [PATCH] hwmon: pmbus: pxe1610: don't bail out when not all pages are active Paul Fertser
2021-04-15 15:18 ` Guenter Roeck
2021-04-16 10:29   ` [PATCH v2] " Paul Fertser
2021-04-16 14:14     ` Guenter Roeck

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