diff options
| author | Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2020-02-03 18:05:32 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-24 07:58:51 +0200 |
| commit | e3a0f74cacb193b1d82fb0d578ce696da9c30975 (patch) | |
| tree | ec4a4a92f00098511cd4fe5825debeaaaa8a4be9 /drivers | |
| parent | 1cb53343f0eb6cdf0609d4421fad34eeafe731c2 (diff) | |
usb: gadget: composite: Inform controller driver of self-powered
commit 5e5caf4fa8d3039140b4548b6ab23dd17fce9b2c upstream.
Different configuration/condition may draw different power. Inform the
controller driver of the change so it can respond properly (e.g.
GET_STATUS request). This fixes an issue with setting MaxPower from
configfs. The composite driver doesn't check this value when setting
self-powered.
Cc: stable@vger.kernel.org
Fixes: 88af8bbe4ef7 ("usb: gadget: the start of the configfs interface")
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/gadget/composite.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 3a0452ff1a56..2e545d025030 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -842,6 +842,11 @@ static int set_config(struct usb_composite_dev *cdev, else power = min(power, 900U); done: + if (power <= USB_SELF_POWER_VBUS_MAX_DRAW) + usb_gadget_set_selfpowered(gadget); + else + usb_gadget_clear_selfpowered(gadget); + usb_gadget_vbus_draw(gadget, power); if (result >= 0 && cdev->delayed_status) result = USB_GADGET_DELAYED_STATUS; @@ -2273,6 +2278,7 @@ void composite_suspend(struct usb_gadget *gadget) cdev->suspended = 1; + usb_gadget_set_selfpowered(gadget); usb_gadget_vbus_draw(gadget, 2); } @@ -2301,6 +2307,9 @@ void composite_resume(struct usb_gadget *gadget) else maxpower = min(maxpower, 900U); + if (maxpower > USB_SELF_POWER_VBUS_MAX_DRAW) + usb_gadget_clear_selfpowered(gadget); + usb_gadget_vbus_draw(gadget, maxpower); } |