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usb: gadget: epautoconf: remove ep and desc configuration from ep_matches() 

As function ep_matches() is used to match endpoint with usb descriptor it's
highly unintuitive that it modifies endpoint and descriptor structures fields.
This patch moves code configuring ep and desc from ep_matches() to
usb_ep_autoconfig_ss(), so now function ep_matches() does nothing more than
its name suggests.

[ balbi@ti.com : fix build warning ]

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Robert Baldyga 2015-07-31 16:00:51 +02:00 committed by Felipe Balbi
parent b58713d53a
commit 5dbe135a15
1 changed files with 34 additions and 32 deletions
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66
drivers/usb/gadget/epautoconf.c
View File

@ -82,13 +82,6 @@ ep_matches (
}
/*
* If the protocol driver hasn't yet decided on wMaxPacketSize
* and wants to know the maximum possible, provide the info.
*/
if (desc->wMaxPacketSize == 0)
desc->wMaxPacketSize = cpu_to_le16(ep->maxpacket_limit);
/* endpoint maxpacket size is an input parameter, except for bulk
* where it's an output parameter representing the full speed limit.
* the usb spec fixes high speed bulk maxpacket at 512 bytes.
@ -119,31 +112,6 @@ ep_matches (
/* MATCH!! */
/* report address */
desc->bEndpointAddress &= USB_DIR_IN;
if (isdigit (ep->name [2])) {
u8 num = simple_strtoul (&ep->name [2], NULL, 10);
desc->bEndpointAddress |= num;
} else if (desc->bEndpointAddress & USB_DIR_IN) {
if (++gadget->in_epnum > 15)
return 0;
desc->bEndpointAddress = USB_DIR_IN | gadget->in_epnum;
} else {
if (++gadget->out_epnum > 15)
return 0;
desc->bEndpointAddress |= gadget->out_epnum;
}
/* report (variable) full speed bulk maxpacket */
if ((USB_ENDPOINT_XFER_BULK == type) && !ep_comp) {
int size = ep->maxpacket_limit;
/* min() doesn't work on bitfields with gcc-3.5 */
if (size > 64)
size = 64;
desc->wMaxPacketSize = cpu_to_le16(size);
}
ep->address = desc->bEndpointAddress;
return 1;
}
@ -280,6 +248,40 @@ struct usb_ep *usb_ep_autoconfig_ss(
/* Fail */
return NULL;
found_ep:
/*
* If the protocol driver hasn't yet decided on wMaxPacketSize
* and wants to know the maximum possible, provide the info.
*/
if (desc->wMaxPacketSize == 0)
desc->wMaxPacketSize = cpu_to_le16(ep->maxpacket_limit);
/* report address */
desc->bEndpointAddress &= USB_DIR_IN;
if (isdigit(ep->name[2])) {
u8 num = simple_strtoul(&ep->name[2], NULL, 10);
desc->bEndpointAddress |= num;
} else if (desc->bEndpointAddress & USB_DIR_IN) {
if (++gadget->in_epnum > 15)
return NULL;
desc->bEndpointAddress = USB_DIR_IN | gadget->in_epnum;
} else {
if (++gadget->out_epnum > 15)
return NULL;
desc->bEndpointAddress |= gadget->out_epnum;
}
/* report (variable) full speed bulk maxpacket */
if ((type == USB_ENDPOINT_XFER_BULK) && !ep_comp) {
int size = ep->maxpacket_limit;
/* min() doesn't work on bitfields with gcc-3.5 */
if (size > 64)
size = 64;
desc->wMaxPacketSize = cpu_to_le16(size);
}
ep->address = desc->bEndpointAddress;
ep->desc = NULL;
ep->comp_desc = NULL;
ep->claimed = true;