[RFC PATCH 1/2] usb/msd: Add status to usb_msd_packet_complete() function

[Nicholas Piggin]

This is a convenience change that accepts a status when completing a
packet.

Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
 hw/usb/dev-storage.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/hw/usb/dev-storage.c b/hw/usb/dev-storage.c
index 341e505bd0..4f1e8b7f6c 100644
--- a/hw/usb/dev-storage.c
+++ b/hw/usb/dev-storage.c
@@ -177,7 +177,7 @@ static const USBDesc desc = {
     .str   = desc_strings,
 };
 
-static void usb_msd_packet_complete(MSDState *s)
+static void usb_msd_packet_complete(MSDState *s, int status)
 {
     USBPacket *p = s->packet;
 
@@ -187,6 +187,7 @@ static void usb_msd_packet_complete(MSDState *s)
      * usb_packet_complete returns.
      */
     trace_usb_msd_packet_complete();
+    p->status = status;
     s->packet = NULL;
     usb_packet_complete(&s->dev, p);
 }
@@ -196,8 +197,7 @@ static void usb_msd_fatal_error(MSDState *s)
     trace_usb_msd_fatal_error();
 
     if (s->packet) {
-        s->packet->status = USB_RET_STALL;
-        usb_msd_packet_complete(s);
+        usb_msd_packet_complete(s, USB_RET_STALL);
     }
 
     /*
@@ -255,8 +255,8 @@ void usb_msd_transfer_data(SCSIRequest *req, uint32_t len)
         usb_msd_copy_data(s, p);
         p = s->packet;
         if (p && p->actual_length == p->iov.size) {
-            p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */
-            usb_msd_packet_complete(s);
+            /* USB_RET_SUCCESS status clears previous ASYNC status */
+            usb_msd_packet_complete(s, USB_RET_SUCCESS);
         }
     }
 }
@@ -295,8 +295,8 @@ void usb_msd_command_complete(SCSIRequest *req, size_t 
resid)
                 s->mode = USB_MSDM_CSW;
             }
         }
-        p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */
-        usb_msd_packet_complete(s);
+        /* USB_RET_SUCCESS status clears previous ASYNC status */
+        usb_msd_packet_complete(s, USB_RET_SUCCESS);
     } else if (s->data_len == 0) {
         s->mode = USB_MSDM_CSW;
     }
@@ -332,8 +332,7 @@ void usb_msd_handle_reset(USBDevice *dev)
     assert(s->req == NULL);
 
     if (s->packet) {
-        s->packet->status = USB_RET_STALL;
-        usb_msd_packet_complete(s);
+        usb_msd_packet_complete(s, USB_RET_STALL);
     }
 
     memset(&s->csw, 0, sizeof(s->csw));
-- 
2.45.2