Patchwork [23/30] usb: add attach callback

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Submitter Gerd Hoffmann
Date Dec. 17, 2010, 11:26 a.m.
Message ID <1292585206-24862-24-git-send-email-kraxel@redhat.com>
Download mbox | patch
Permalink /patch/75881/
State New
Headers show

Comments

Gerd Hoffmann - Dec. 17, 2010, 11:26 a.m.
Add handle_attach() callback to USBDeviceInfo which is called by the
generic package handler when the device is attached to the usb bus
(i.e. plugged into a port).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/usb.c |    7 ++++++-
 hw/usb.h |    5 +++++
 2 files changed, 11 insertions(+), 1 deletions(-)

Patch

diff --git a/hw/usb.c b/hw/usb.c
index ba720b4..82a6217 100644
--- a/hw/usb.c
+++ b/hw/usb.c
@@ -194,6 +194,9 @@  int usb_generic_handle_packet(USBDevice *s, USBPacket *p)
     switch(p->pid) {
     case USB_MSG_ATTACH:
         s->state = USB_STATE_ATTACHED;
+        if (s->info->handle_attach) {
+            s->info->handle_attach(s);
+        }
         return 0;
 
     case USB_MSG_DETACH:
@@ -204,7 +207,9 @@  int usb_generic_handle_packet(USBDevice *s, USBPacket *p)
         s->remote_wakeup = 0;
         s->addr = 0;
         s->state = USB_STATE_DEFAULT;
-        s->info->handle_reset(s);
+        if (s->info->handle_reset) {
+            s->info->handle_reset(s);
+        }
         return 0;
     }
 
diff --git a/hw/usb.h b/hw/usb.h
index 864501a..0219816 100644
--- a/hw/usb.h
+++ b/hw/usb.h
@@ -194,6 +194,11 @@  struct USBDeviceInfo {
     void (*handle_destroy)(USBDevice *dev);
 
     /*
+     * Attach the device
+     */
+    void (*handle_attach)(USBDevice *dev);
+
+    /*
      * Reset the device
      */
     void (*handle_reset)(USBDevice *dev);