Patchwork [3/3] ehci: simplify ehci_state_executing

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Submitter Hans de Goede
Date Aug. 17, 2012, 9:39 a.m.
Message ID <1345196357-6076-3-git-send-email-hdegoede@redhat.com>
Download mbox | patch
Permalink /patch/178177/
State New
Headers show

Comments

Hans de Goede - Aug. 17, 2012, 9:39 a.m.
ehci_state_executing does not need to check for p->usb_status == USB_RET_ASYNC
or USB_RET_PROCERR, since ehci_execute_complete already does a similar check
and will trigger an assert if either value is encountered.

USB_RET_ASYNC should never be the packet status when execute_complete runs
for obvious reasons, and USB_RET_PROCERR is only used by ehci_state_execute /
ehci_execute not by ehci_state_executing / ehci_execute_complete.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 hw/usb/hcd-ehci.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

Patch

diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index 4750175..378b42b 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -2070,19 +2070,11 @@  out:
 static int ehci_state_executing(EHCIQueue *q)
 {
     EHCIPacket *p = QTAILQ_FIRST(&q->packets);
-    int again = 0;
 
     assert(p != NULL);
     assert(p->qtdaddr == q->qtdaddr);
 
     ehci_execute_complete(q);
-    if (p->usb_status == USB_RET_ASYNC) {
-        goto out;
-    }
-    if (p->usb_status == USB_RET_PROCERR) {
-        again = -1;
-        goto out;
-    }
 
     // 4.10.3
     if (!q->async) {
@@ -2100,11 +2092,8 @@  static int ehci_state_executing(EHCIQueue *q)
         ehci_set_state(q->ehci, q->async, EST_WRITEBACK);
     }
 
-    again = 1;
-
-out:
     ehci_flush_qh(q);
-    return again;
+    return 1;
 }