From 52ec49a5e56a27c5b6f8217708783eff39f24c16 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 29 Sep 2014 13:35:54 -0500 Subject: [PATCH] usb: gadget: function: acm: make f_acm pass USB20CV Chapter9 During Halt Endpoint Test, our interrupt endpoint will be disabled, which will clear out ep->desc to NULL. Unless we call config_ep_by_speed() again, we will not be able to enable this endpoint which will make us fail that test. Fixes: f9c56cd (usb: gadget: Clear usb_endpoint_descriptor inside the struct usb_ep on disable) Cc: # v3.4+ Signed-off-by: Felipe Balbi --- drivers/usb/gadget/function/f_acm.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/function/f_acm.c b/drivers/usb/gadget/function/f_acm.c index 6da4685490ef..aad8165e98ef 100644 --- a/drivers/usb/gadget/function/f_acm.c +++ b/drivers/usb/gadget/function/f_acm.c @@ -433,12 +433,12 @@ static int acm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) dev_vdbg(&cdev->gadget->dev, "reset acm control interface %d\n", intf); usb_ep_disable(acm->notify); - } else { - dev_vdbg(&cdev->gadget->dev, - "init acm ctrl interface %d\n", intf); + } + + if (!acm->notify->desc) if (config_ep_by_speed(cdev->gadget, f, acm->notify)) return -EINVAL; - } + usb_ep_enable(acm->notify); acm->notify->driver_data = acm; -- 2.20.1