qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Qemu-devel] [PATCH] usb-storage: cancel I/O on reset


From: Gerd Hoffmann
Subject: [Qemu-devel] [PATCH] usb-storage: cancel I/O on reset
Date: Thu, 5 Jan 2012 16:59:06 +0100

When resetting the usb-storage device we'll have to carefully cancel
and clear any requests which might be in flight, otherwise we'll confuse
the state machine.

Signed-off-by: Gerd Hoffmann <address@hidden>
---
 hw/usb-msd.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/hw/usb-msd.c b/hw/usb-msd.c
index 4c06950..3147131 100644
--- a/hw/usb-msd.c
+++ b/hw/usb-msd.c
@@ -278,6 +278,18 @@ static void usb_msd_handle_reset(USBDevice *dev)
     MSDState *s = (MSDState *)dev;
 
     DPRINTF("Reset\n");
+    if (s->req) {
+        scsi_req_cancel(s->req);
+    }
+    assert(s->req == NULL);
+
+    if (s->packet) {
+        USBPacket *p = s->packet;
+        s->packet = NULL;
+        p->result = USB_RET_STALL;
+        usb_packet_complete(dev, p);
+    }
+
     s->mode = USB_MSDM_CBW;
 }
 
-- 
1.7.1




reply via email to

[Prev in Thread] Current Thread [Next in Thread]