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charset="utf-8" When the device working at enhanced superspeed, it needs to send function remote wakeup signal to the host instead of device remote wakeup. Add function wakeup support for the purpose. Signed-off-by: Xu Yang Reviewed-by: Frank Li --- Changes in v2: - fix alignment --- drivers/usb/gadget/legacy/zero.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/drivers/usb/gadget/legacy/zero.c b/drivers/usb/gadget/legacy/z= ero.c index a05785bdeb30..08a21bd0c2ba 100644 --- a/drivers/usb/gadget/legacy/zero.c +++ b/drivers/usb/gadget/legacy/zero.c @@ -147,6 +147,12 @@ static struct usb_gadget_strings *dev_strings[] =3D { NULL, }; =20 +static struct usb_function *func_lb; +static struct usb_function_instance *func_inst_lb; + +static struct usb_function *func_ss; +static struct usb_function_instance *func_inst_ss; + /*------------------------------------------------------------------------= -*/ =20 static struct timer_list autoresume_timer; @@ -156,6 +162,7 @@ static void zero_autoresume(struct timer_list *unused) { struct usb_composite_dev *cdev =3D autoresume_cdev; struct usb_gadget *g =3D cdev->gadget; + int status; =20 /* unconfigured devices can't issue wakeups */ if (!cdev->config) @@ -165,10 +172,18 @@ static void zero_autoresume(struct timer_list *unused) * more significant than just a timer firing; likely * because of some direct user request. */ - if (g->speed !=3D USB_SPEED_UNKNOWN) { - int status =3D usb_gadget_wakeup(g); - INFO(cdev, "%s --> %d\n", __func__, status); + if (g->speed =3D=3D USB_SPEED_UNKNOWN) + return; + + if (g->speed >=3D USB_SPEED_SUPER) { + if (loopdefault) + status =3D usb_func_wakeup(func_lb); + else + status =3D usb_func_wakeup(func_ss); + } else { + status =3D usb_gadget_wakeup(g); } + INFO(cdev, "%s --> %d\n", __func__, status); } =20 static void zero_suspend(struct usb_composite_dev *cdev) @@ -206,9 +221,6 @@ static struct usb_configuration loopback_driver =3D { /* .iConfiguration =3D DYNAMIC */ }; =20 -static struct usb_function *func_ss; -static struct usb_function_instance *func_inst_ss; - static int ss_config_setup(struct usb_configuration *c, const struct usb_ctrlrequest *ctrl) { @@ -248,9 +260,6 @@ module_param_named(isoc_maxburst, gzero_options.isoc_ma= xburst, uint, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(isoc_maxburst, "0 - 15 (ss only)"); =20 -static struct usb_function *func_lb; -static struct usb_function_instance *func_inst_lb; - module_param_named(qlen, gzero_options.qlen, uint, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(qlen, "depth of loopback queue"); =20 --=20 2.34.1