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xhci: add variable 'cmd_trb' in handle_cmd_completion() 

This patch adds a new variable 'cmd_trb' to hold the address of the
command TRB, that is associated with the command completion event,
and to replace repetitions of xhci->cmd_ring->dequeue into the code.

Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
Acked-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This commit is contained in:
Xenia Ragiadakou 2013-09-09 13:29:57 +03:00 коммит произвёл Sarah Sharp
Родитель e7a79a1d6a
Коммит 9124b121e3
1 изменённых файлов: 9 добавлений и 8 удалений
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17
drivers/usb/host/xhci-ring.c
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@ -1520,10 +1520,12 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
u64 cmd_dma;
dma_addr_t cmd_dequeue_dma;
u32 cmd_comp_code;
union xhci_trb *cmd_trb;
cmd_dma = le64_to_cpu(event->cmd_trb);
cmd_trb = xhci->cmd_ring->dequeue;
cmd_dequeue_dma = xhci_trb_virt_to_dma(xhci->cmd_ring->deq_seg,
xhci->cmd_ring->dequeue);
cmd_trb);
/* Is the command ring deq ptr out of sync with the deq seg ptr? */
if (cmd_dequeue_dma == 0) {
xhci->error_bitmask |= 1 << 4;
@ -1535,8 +1537,7 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
return;
}
trace_xhci_cmd_completion(&xhci->cmd_ring->dequeue->generic,
(struct xhci_generic_trb *) event);
trace_xhci_cmd_completion(cmd_trb, (struct xhci_generic_trb *) event);
cmd_comp_code = GET_COMP_CODE(le32_to_cpu(event->status));
if (cmd_comp_code == COMP_CMD_ABORT || cmd_comp_code == COMP_CMD_STOP) {
@ -1558,7 +1559,7 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
return;
}
switch (le32_to_cpu(xhci->cmd_ring->dequeue->generic.field[3])
switch (le32_to_cpu(cmd_trb->generic.field[3])
& TRB_TYPE_BITMASK) {
case TRB_TYPE(TRB_ENABLE_SLOT):
xhci_handle_cmd_enable_slot(xhci, slot_id, cmd_comp_code);
@ -1576,19 +1577,19 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
xhci_handle_cmd_addr_dev(xhci, slot_id, cmd_comp_code);
break;
case TRB_TYPE(TRB_STOP_RING):
xhci_handle_cmd_stop_ep(xhci, xhci->cmd_ring->dequeue, event);
xhci_handle_cmd_stop_ep(xhci, cmd_trb, event);
break;
case TRB_TYPE(TRB_SET_DEQ):
xhci_handle_cmd_set_deq(xhci, event, xhci->cmd_ring->dequeue);
xhci_handle_cmd_set_deq(xhci, event, cmd_trb);
break;
case TRB_TYPE(TRB_CMD_NOOP):
break;
case TRB_TYPE(TRB_RESET_EP):
xhci_handle_cmd_reset_ep(xhci, event, xhci->cmd_ring->dequeue);
xhci_handle_cmd_reset_ep(xhci, event, cmd_trb);
break;
case TRB_TYPE(TRB_RESET_DEV):
WARN_ON(slot_id != TRB_TO_SLOT_ID(
le32_to_cpu(xhci->cmd_ring->dequeue->generic.field[3])));
le32_to_cpu(cmd_trb->generic.field[3])));
xhci_handle_cmd_reset_dev(xhci, slot_id, event);
break;
case TRB_TYPE(TRB_NEC_GET_FW):