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usb: gadget: function: f_fs: pass companion descriptor along

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commit 2bfa0719ac upstream.

If we're dealing with SuperSpeed endpoints, we need
to make sure to pass along the companion descriptor
and initialize fields needed by the Gadget
API. Eventually, f_fs.c should be converted to use
config_ep_by_speed() like all other functions,
though.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felipe Balbi
2017-01-31 14:54:45 +02:00
committed by Greg Kroah-Hartman
parent 40192c9666
commit 5ce2e4ce4a
1 changed files with 13 additions and 2 deletions
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15
drivers/usb/gadget/function/f_fs.c
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@ -1833,11 +1833,14 @@ static int ffs_func_eps_enable(struct ffs_function *func)
spin_lock_irqsave(&func->ffs->eps_lock, flags);
do {
struct usb_endpoint_descriptor *ds;
struct usb_ss_ep_comp_descriptor *comp_desc = NULL;
int needs_comp_desc = false;
int desc_idx;
if (ffs->gadget->speed == USB_SPEED_SUPER)
if (ffs->gadget->speed == USB_SPEED_SUPER) {
desc_idx = 2;
else if (ffs->gadget->speed == USB_SPEED_HIGH)
needs_comp_desc = true;
} else if (ffs->gadget->speed == USB_SPEED_HIGH)
desc_idx = 1;
else
desc_idx = 0;
@ -1854,6 +1857,14 @@ static int ffs_func_eps_enable(struct ffs_function *func)
ep->ep->driver_data = ep;
ep->ep->desc = ds;
comp_desc = (struct usb_ss_ep_comp_descriptor *)(ds +
USB_DT_ENDPOINT_SIZE);
ep->ep->maxburst = comp_desc->bMaxBurst + 1;
if (needs_comp_desc)
ep->ep->comp_desc = comp_desc;
ret = usb_ep_enable(ep->ep);
if (likely(!ret)) {
epfile->ep = ep;