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usb: gadget: core: fix ->udc_set_speed() logic 

Consider the following case: udc controller supports SuperSpeed.  If we
first load a HighSpeed gadget followed by a SuperSpeed gadget, the
SuperSpeed gadget will be limited to HighSpeed as UDC core driver
doesn't call ->udc_set_speed() in the second case.

Call ->udc_set_speed() unconditionally to fix this issue.

This will also fix the case for dwc3 controller driver when SuperSpeed
gadget is loaded first and works in HighSpeed only as udc_set_speed()
was never being called.

Fixes: 6099eca796ae ("usb: gadget: core: introduce ->udc_set_speed() method")
Cc: <stable@vger.kernel.org> [v4.13+]
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Roger Quadros 2017-09-19 11:46:16 +03:00 committed by Felipe Balbi
parent 5516847083
commit 97e133d54c
1 changed files with 1 additions and 2 deletions
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3
drivers/usb/gadget/udc/core.c
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@ -1320,8 +1320,7 @@ static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *dri
udc->dev.driver = &driver->driver;
udc->gadget->dev.driver = &driver->driver;
if (driver->max_speed < udc->gadget->max_speed)
usb_gadget_udc_set_speed(udc, driver->max_speed);
usb_gadget_udc_set_speed(udc, driver->max_speed);
ret = driver->bind(udc->gadget, driver);
if (ret)