xen: fix build when SYSRQ is disabled
Fix build error when CONFIG_MAGIC_SYSRQ is not enabled: drivers/xen/manage.c:223: error: implicit declaration of function 'handle_sysrq' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -185,6 +185,7 @@ static void shutdown_handler(struct xenbus_watch *watch,
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kfree(str);
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}
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#ifdef CONFIG_MAGIC_SYSRQ
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static void sysrq_handler(struct xenbus_watch *watch, const char **vec,
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unsigned int len)
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{
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@ -214,15 +215,16 @@ static void sysrq_handler(struct xenbus_watch *watch, const char **vec,
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handle_sysrq(sysrq_key, NULL);
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}
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static struct xenbus_watch shutdown_watch = {
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.node = "control/shutdown",
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.callback = shutdown_handler
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};
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static struct xenbus_watch sysrq_watch = {
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.node = "control/sysrq",
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.callback = sysrq_handler
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};
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#endif
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static struct xenbus_watch shutdown_watch = {
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.node = "control/shutdown",
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.callback = shutdown_handler
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};
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static int setup_shutdown_watcher(void)
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{
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@ -234,11 +236,13 @@ static int setup_shutdown_watcher(void)
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return err;
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}
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#ifdef CONFIG_MAGIC_SYSRQ
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err = register_xenbus_watch(&sysrq_watch);
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if (err) {
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printk(KERN_ERR "Failed to set sysrq watcher\n");
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return err;
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}
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#endif
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return 0;
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}
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