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| author | Sebastian Bauer <mail@sebastianbauer.info> | 2011-07-21 15:40:07 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2011-08-01 21:06:47 +0200 |
| commit | c240d78a8f9b1d4e1d391203f4a698117fae3474 (patch) | |
| tree | 1ce018de133e5b9c3aacba9465e526d268dfb0b2 /drivers/usb/gadget/f_hid.c | |
| parent | usb: musb: fix Kconfig (diff) | |
| download | linux-c240d78a8f9b1d4e1d391203f4a698117fae3474.tar.xz linux-c240d78a8f9b1d4e1d391203f4a698117fae3474.zip | |
usb: gadget: hid: don't STALL when processing a HID Descriptor request
This is a patch to fix an issue with the HID gadget which, at the moment,
returns STALL on a HID descriptor request. Essentially, the patch changes
the hid gadget such that a request for the HID descriptor is handled by
copying the descriptor into the response buffer, rather than falling
through the default case, in which the request is answered by a STALL.
Signed-off-by: Sebastian Bauer <mail@sebastianbauer.info>
Acked-by: Peter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/f_hid.c')
| -rw-r--r-- | drivers/usb/gadget/f_hid.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/gadget/f_hid.c b/drivers/usb/gadget/f_hid.c index 403a48bcf560..83a266bdb40e 100644 --- a/drivers/usb/gadget/f_hid.c +++ b/drivers/usb/gadget/f_hid.c @@ -367,6 +367,13 @@ static int hidg_setup(struct usb_function *f, case ((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8 | USB_REQ_GET_DESCRIPTOR): switch (value >> 8) { + case HID_DT_HID: + VDBG(cdev, "USB_REQ_GET_DESCRIPTOR: HID\n"); + length = min_t(unsigned short, length, + hidg_desc.bLength); + memcpy(req->buf, &hidg_desc, length); + goto respond; + break; case HID_DT_REPORT: VDBG(cdev, "USB_REQ_GET_DESCRIPTOR: REPORT\n"); length = min_t(unsigned short, length, |