On Wed, Jul 30, 2014 at 07:28:24PM +0400, Sergei Shtylyov wrote:
> On 07/30/2014 01:43 PM, Robert Baldyga wrote:
>
> >This patch introduces ioctl named FUNCTIONFS_ENDPOINT_DESC, which
> >returns endpoint descriptor to userspace. It works only if function
> >is active.
>
> >Signed-off-by: Robert Baldyga <r.bald...@samsung.com>
> >---
> > drivers/usb/gadget/f_fs.c | 17 +++++++++++++++++
> > include/uapi/linux/usb/functionfs.h | 6 ++++++
> > 2 files changed, 23 insertions(+)
>
> >diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
> >index 6b806be..7f16c5a 100644
> >--- a/drivers/usb/gadget/f_fs.c
> >+++ b/drivers/usb/gadget/f_fs.c
> >@@ -1031,6 +1031,23 @@ static long ffs_epfile_ioctl(struct file *file,
> >unsigned code,
> > case FUNCTIONFS_ENDPOINT_REVMAP:
> > ret = epfile->ep->num;
> > break;
> >+ case FUNCTIONFS_ENDPOINT_DESC:
> >+ {
> >+ int desc_idx;
> >+ struct usb_endpoint_descriptor *desc;
> >+
> >+ if (epfile->ffs->gadget->speed == USB_SPEED_SUPER)
> >+ desc_idx = 2;
> >+ else if (epfile->ffs->gadget->speed == USB_SPEED_HIGH)
> >+ desc_idx = 1;
> >+ else
> >+ desc_idx = 0;
>
> I think the above is asking to be a *switch* statement instead.agreed. -- balbi
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