xen/manage: correct return value check on xenbus_scanf()

[android-x86/kernel.git] / drivers / xen / manage.c

diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index 26e5e85..357a8db 100644 (file)
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -277,7 +277,7 @@ static void sysrq_handler(struct xenbus_watch *watch, const char **vec,
        err = xenbus_transaction_start(&xbt);
        if (err)
                return;
-       if (!xenbus_scanf(xbt, "control", "sysrq", "%c", &sysrq_key)) {
+       if (xenbus_scanf(xbt, "control", "sysrq", "%c", &sysrq_key) < 0) {
                pr_err("Unable to read sysrq code in control/sysrq\n");
                xenbus_transaction_end(xbt, 1);
                return;