hw/xen: Constify xenstore_be::XenDevOps

XenDevOps @ops is not updated, mark it const.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Message-Id: <20240510104908.76908-4-philmd@linaro.org>

hw/xen/xen-legacy-backend.c

@@ -520,7 +520,7 @@ void xen_be_check_state(struct XenLegacyDevice *xendev)
 struct xenstore_be {
     const char *type;
     int dom;
-    struct XenDevOps *ops;
+    const struct XenDevOps *ops;
 };
 
 static void xenstore_update_be(void *opaque, const char *watch)
@@ -557,7 +557,7 @@ static void xenstore_update_be(void *opaque, const char *watch)
     }
 }
 
-static int xenstore_scan(const char *type, int dom, struct XenDevOps *ops)
+static int xenstore_scan(const char *type, int dom, const struct XenDevOps *ops)
 {
     struct XenLegacyDevice *xendev;
     char path[XEN_BUFSIZE];
@@ -624,7 +624,7 @@ void xen_be_init(void)
     xen_set_dynamic_sysbus();
 }
 
-int xen_be_register(const char *type, struct XenDevOps *ops)
+int xen_be_register(const char *type, const struct XenDevOps *ops)
 {
     char path[50];
 

include/hw/xen/xen-legacy-backend.h

@@ -40,7 +40,7 @@ void xen_be_check_state(struct XenLegacyDevice *xendev);
 
 /* xen backend driver bits */
 void xen_be_init(void);
-int xen_be_register(const char *type, struct XenDevOps *ops);
+int xen_be_register(const char *type, const struct XenDevOps *ops);
 int xen_be_set_state(struct XenLegacyDevice *xendev, enum xenbus_state state);
 int xen_be_bind_evtchn(struct XenLegacyDevice *xendev);
 void xen_be_set_max_grant_refs(struct XenLegacyDevice *xendev,