xhci: refactor TRB_ENABLE_SLOT case into function

The function that handles xHCI command completion is much too long and
there is need to be broken up into individual functions for each command
completion to improve code readablity.
This patch refactors the code in TRB_ENABLE_SLOT switch case in
handle_cmd_completion() into a fuction named xhci_handle_cmd_enable_slot().

Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index f5d504740281966c855079b1ec49d2d814d9952a..4cad420d770834201b0b1e07b9ac64dbb04da290 100644 (file)
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -1384,6 +1384,16 @@ static int handle_stopped_cmd_ring(struct xhci_hcd *xhci,
        return cur_trb_is_good;
 }
 
+static void xhci_handle_cmd_enable_slot(struct xhci_hcd *xhci, int slot_id,
+               u32 cmd_comp_code)
+{
+       if (cmd_comp_code == COMP_SUCCESS)
+               xhci->slot_id = slot_id;
+       else
+               xhci->slot_id = 0;
+       complete(&xhci->addr_dev);
+}
+
 static void handle_cmd_completion(struct xhci_hcd *xhci,
                struct xhci_event_cmd *event)
 {
@@ -1437,11 +1447,8 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
        switch (le32_to_cpu(xhci->cmd_ring->dequeue->generic.field[3])
                & TRB_TYPE_BITMASK) {
        case TRB_TYPE(TRB_ENABLE_SLOT):
-               if (GET_COMP_CODE(le32_to_cpu(event->status)) == COMP_SUCCESS)
-                       xhci->slot_id = slot_id;
-               else
-                       xhci->slot_id = 0;
-               complete(&xhci->addr_dev);
+               xhci_handle_cmd_enable_slot(xhci, slot_id,
+                               GET_COMP_CODE(le32_to_cpu(event->status)));
                break;
        case TRB_TYPE(TRB_DISABLE_SLOT):
                if (xhci->devs[slot_id]) {