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usb: ci_udc: remove controller.items array 

There's no need to store an array of QTD pointers in the controller.
Since the calculation is so simple, just have ci_get_qtd() perform it
at run-time, rather than pre-calculating everything.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Stephen Warren 2014-07-01 11:41:17 -06:00 committed by Marek Vasut
parent 7e54188775
commit 6ac15fda4e
2 changed files with 3 additions and 6 deletions
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8
drivers/usb/gadget/ci_udc.c
View File

@ -146,7 +146,9 @@ static struct ept_queue_head *ci_get_qh(int ep_num, int dir_in)
*/
static struct ept_queue_item *ci_get_qtd(int ep_num, int dir_in)
{
return controller.items[(ep_num * 2) + dir_in];
int index = (ep_num * 2) + dir_in;
uint8_t *imem = controller.items_mem + (index * ILIST_ENT_SZ);
return (struct ept_queue_item *)imem;
}
/**
@ -790,7 +792,6 @@ static int ci_pullup(struct usb_gadget *gadget, int is_on)
static int ci_udc_probe(void)
{
struct ept_queue_head *head;
uint8_t *imem;
int i;
const int num = 2 * NUM_ENDPOINTS;
@ -831,9 +832,6 @@ static int ci_udc_probe(void)
head->next = TERMINATE;
head->info = 0;
imem = controller.items_mem + (i * ILIST_ENT_SZ);
controller.items[i] = (struct ept_queue_item *)imem;
if (i & 1) {
ci_flush_qh(i / 2);
ci_flush_qtd(i / 2);

1
drivers/usb/gadget/ci_udc.h
View File

@ -102,7 +102,6 @@ struct ci_drv {
struct usb_gadget_driver *driver;
struct ehci_ctrl *ctrl;
struct ept_queue_head *epts;
struct ept_queue_item *items[2 * NUM_ENDPOINTS];
uint8_t *items_mem;
struct ci_ep ep[NUM_ENDPOINTS];
};