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    Subject[PATCH 5.12 329/677] hwmon: (pmbus/pxe1610) dont bail out when not all pages are active
    Date
    From: Paul Fertser <fercerpav@gmail.com>

    [ Upstream commit f025314306ae17a3fdaf2874d7e878ce19cea363 ]

    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>
    Link: https://lore.kernel.org/r/20210416102926.13614-1-fercerpav@gmail.com
    Signed-off-by: Guenter Roeck <linux@roeck-us.net>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/hwmon/pmbus/pxe1610.c | 9 +++++++++
    1 file changed, 9 insertions(+)

    diff --git a/drivers/hwmon/pmbus/pxe1610.c b/drivers/hwmon/pmbus/pxe1610.c
    index da27ce34ee3f..eb4a06003b7f 100644
    --- a/drivers/hwmon/pmbus/pxe1610.c
    +++ b/drivers/hwmon/pmbus/pxe1610.c
    @@ -41,6 +41,15 @@ static int pxe1610_identify(struct i2c_client *client,
    info->vrm_version[i] = vr13;
    break;
    default:
    + /*
    + * If prior pages are available limit operation
    + * to them
    + */
    + if (i != 0) {
    + info->pages = i;
    + return 0;
    + }
    +
    return -ENODEV;
    }
    }
    --
    2.30.2


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