| Message ID | 20240319074309.3306579-1-kyletso@google.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v1] usb: typec: Return size of buffer if pd_set operation succeeds | expand |
On Tue, Mar 19, 2024 at 03:43:09PM +0800, Kyle Tso wrote: > The attribute writing should return the number of bytes used from the > buffer on success. > > Fixes: a7cff92f0635 ("usb: typec: USB Power Delivery helpers for ports and partners") > Cc: stable@vger.kernel.org > Signed-off-by: Kyle Tso <kyletso@google.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > --- > drivers/usb/typec/class.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c > index 389c7f0b8d93..9610e647a8d4 100644 > --- a/drivers/usb/typec/class.c > +++ b/drivers/usb/typec/class.c > @@ -1310,6 +1310,7 @@ static ssize_t select_usb_power_delivery_store(struct device *dev, > { > struct typec_port *port = to_typec_port(dev); > struct usb_power_delivery *pd; > + int ret; > > if (!port->ops || !port->ops->pd_set) > return -EOPNOTSUPP; > @@ -1318,7 +1319,11 @@ static ssize_t select_usb_power_delivery_store(struct device *dev, > if (!pd) > return -EINVAL; > > - return port->ops->pd_set(port, pd); > + ret = port->ops->pd_set(port, pd); > + if (ret) > + return ret; > + > + return size; > } > > static ssize_t select_usb_power_delivery_show(struct device *dev, > -- > 2.44.0.291.gc1ea87d7ee-goog
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 389c7f0b8d93..9610e647a8d4 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -1310,6 +1310,7 @@ static ssize_t select_usb_power_delivery_store(struct device *dev, { struct typec_port *port = to_typec_port(dev); struct usb_power_delivery *pd; + int ret; if (!port->ops || !port->ops->pd_set) return -EOPNOTSUPP; @@ -1318,7 +1319,11 @@ static ssize_t select_usb_power_delivery_store(struct device *dev, if (!pd) return -EINVAL; - return port->ops->pd_set(port, pd); + ret = port->ops->pd_set(port, pd); + if (ret) + return ret; + + return size; } static ssize_t select_usb_power_delivery_show(struct device *dev,
The attribute writing should return the number of bytes used from the buffer on success. Fixes: a7cff92f0635 ("usb: typec: USB Power Delivery helpers for ports and partners") Cc: stable@vger.kernel.org Signed-off-by: Kyle Tso <kyletso@google.com> --- drivers/usb/typec/class.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)