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| author | Kyle Tso <kyletso@google.com> | 2024-03-19 15:43:09 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-03 15:11:56 +0200 |
| commit | 9a103ca280aeb0123508572cc7f6b64a7b6a66da (patch) | |
| tree | 5e303d3ae36727ceb5ff21ccf195dbad049ba0b8 | |
| parent | df714c9eb00e8247069e462660a80582bbd90e9e (diff) | |
| download | linux-stable-9a103ca280aeb0123508572cc7f6b64a7b6a66da.tar.gz linux-stable-9a103ca280aeb0123508572cc7f6b64a7b6a66da.tar.bz2 linux-stable-9a103ca280aeb0123508572cc7f6b64a7b6a66da.zip | |
usb: typec: Return size of buffer if pd_set operation succeeds
commit 53f5094fdf5deacd99b8655df692e9278506724d upstream.
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: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240319074309.3306579-1-kyletso@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/typec/class.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 2da19feacd91..2373cd39b484 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, |