xhci: Use completion and status in global command queue
Remove the per-device command list and handle_cmd_in_cmd_wait_list()
and use the completion and status variables found in the
command structure in the global command list.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 8dbc410..64c1ba3 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -2626,8 +2626,6 @@
return -ENOMEM;
}
- list_add_tail(&command->cmd_list, &virt_dev->cmd_list);
-
if (!ctx_change)
ret = xhci_queue_configure_endpoint(xhci, command,
command->in_ctx->dma,
@@ -2637,7 +2635,6 @@
command->in_ctx->dma,
udev->slot_id, must_succeed);
if (ret < 0) {
- list_del(&command->cmd_list);
if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK))
xhci_free_host_resources(xhci, ctrl_ctx);
spin_unlock_irqrestore(&xhci->lock, flags);
@@ -3499,11 +3496,9 @@
/* Attempt to submit the Reset Device command to the command ring */
spin_lock_irqsave(&xhci->lock, flags);
- list_add_tail(&reset_device_cmd->cmd_list, &virt_dev->cmd_list);
ret = xhci_queue_reset_device(xhci, reset_device_cmd, slot_id);
if (ret) {
xhci_dbg(xhci, "FIXME: allocate a command ring segment\n");
- list_del(&reset_device_cmd->cmd_list);
spin_unlock_irqrestore(&xhci->lock, flags);
goto command_cleanup;
}
@@ -3517,13 +3512,6 @@
if (timeleft <= 0) {
xhci_warn(xhci, "%s while waiting for reset device command\n",
timeleft == 0 ? "Timeout" : "Signal");
- spin_lock_irqsave(&xhci->lock, flags);
- /* The timeout might have raced with the event ring handler, so
- * only delete from the list if the item isn't poisoned.
- */
- if (reset_device_cmd->cmd_list.next != LIST_POISON1)
- list_del(&reset_device_cmd->cmd_list);
- spin_unlock_irqrestore(&xhci->lock, flags);
ret = -ETIME;
goto command_cleanup;
}
@@ -3895,7 +3883,7 @@
return -ETIME;
}
- switch (virt_dev->cmd_status) {
+ switch (command->status) {
case COMP_CTX_STATE:
case COMP_EBADSLT:
xhci_err(xhci, "Setup ERROR: setup %s command for slot %d.\n",
@@ -3918,7 +3906,7 @@
default:
xhci_err(xhci,
"ERROR: unexpected setup %s command completion code 0x%x.\n",
- act, virt_dev->cmd_status);
+ act, command->status);
xhci_dbg(xhci, "Slot ID %d Output Context:\n", udev->slot_id);
xhci_dbg_ctx(xhci, virt_dev->out_ctx, 2);
trace_xhci_address_ctx(xhci, virt_dev->out_ctx, 1);