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USB: f_fs: Use config_ep_by_speed() for ADB endpoints

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config_ep_by_speed() configures endpoint based on speed and
uses already available endpoint descriptors. Here it overrides
maxpacket field based on selected descriptor for endpoint. maxpacket
field is used by some of UDC driver to resize TXFIFO for IN endpoint.
Due to maxpacket is not being configured with selected endpoint
descriptor, UDC driver uses previously stale maxpacket value which
results into wrong TXFIFO calculated for used IN endpoint. Fix this
issue by calling config_ep_by_speed() for ADB endpoints to make sure
that proper value is updated with maxpacket field based on descriptor.

Change-Id: I9121f4df898de1455f9be4333ca8d0e744f4eb9e
Signed-off-by: Mayank Rana <mrana@codeaurora.org>
This commit is contained in:
Mayank Rana 2016-01-28 12:12:43 -08:00 • committed by David Keitel
parent 574860e439
commit 86751cfb33
1 changed files with 8 additions and 0 deletions
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8
drivers/usb/gadget/function/f_fs.c
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@ -1758,6 +1758,14 @@ static int ffs_func_eps_enable(struct ffs_function *func)
ep->ep->driver_data = ep;
ep->ep->desc = ds;
ret = config_ep_by_speed(func->gadget, &func->function, ep->ep);
if (ret) {
pr_err("%s(): config_ep_by_speed(%d) err for %s\n",
__func__, ret, ep->ep->name);
break;
}
ret = usb_ep_enable(ep->ep);
if (likely(!ret)) {
epfile->ep = ep;