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; } }