diff options
| author | Felipe Balbi <balbi@ti.com> | 2014-09-29 22:35:54 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-10-21 00:58:48 +0400 |
| commit | 52ec49a5e56a27c5b6f8217708783eff39f24c16 (patch) | |
| tree | 22e03456fbf8d7a1bc05ad5f30bb65d4fb7ff00b /drivers/usb | |
| parent | e975be287b87e0862b0f57e7326a79667e32a90a (diff) | |
| download | linux-52ec49a5e56a27c5b6f8217708783eff39f24c16.tar.xz | |
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: <stable@vger.kernel.org> # v3.4+
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/function/f_acm.c | 8 |
1 files 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; |