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usb: host: xhci: convert to list_for_each_entry_safe()

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instead of using while(!list_empty()) followed by list_first_entry(), we
can actually use list_for_each_entry_safe().

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felipe Balbi 2017-01-23 14:20:17 +02:00 committed by Greg Kroah-Hartman
parent 5278204c98
commit a54cfae3c7
1 changed files with 8 additions and 7 deletions
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15
drivers/usb/host/xhci-ring.c
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@ -808,11 +808,11 @@ static void xhci_handle_cmd_stop_ep(struct xhci_hcd *xhci, int slot_id,
static void xhci_kill_ring_urbs(struct xhci_hcd *xhci, struct xhci_ring *ring)
{
struct xhci_td *cur_td;
struct xhci_td *tmp;
while (!list_empty(&ring->td_list)) {
cur_td = list_first_entry(&ring->td_list,
struct xhci_td, td_list);
list_for_each_entry_safe(cur_td, tmp, &ring->td_list, td_list) {
list_del_init(&cur_td->td_list);
if (!list_empty(&cur_td->cancelled_td_list))
list_del_init(&cur_td->cancelled_td_list);
@ -828,6 +828,7 @@ static void xhci_kill_endpoint_urbs(struct xhci_hcd *xhci,
int slot_id, int ep_index)
{
struct xhci_td *cur_td;
struct xhci_td *tmp;
struct xhci_virt_ep *ep;
struct xhci_ring *ring;
@ -853,12 +854,12 @@ static void xhci_kill_endpoint_urbs(struct xhci_hcd *xhci,
slot_id, ep_index);
xhci_kill_ring_urbs(xhci, ring);
}
while (!list_empty(&ep->cancelled_td_list)) {
cur_td = list_first_entry(&ep->cancelled_td_list,
struct xhci_td, cancelled_td_list);
list_del_init(&cur_td->cancelled_td_list);
list_for_each_entry_safe(cur_td, tmp, &ep->cancelled_td_list,
cancelled_td_list) {
list_del_init(&cur_td->cancelled_td_list);
inc_td_cnt(cur_td->urb);
if (last_td_in_urb(cur_td))
xhci_giveback_urb_in_irq(xhci, cur_td, -ESHUTDOWN);
}