powerpc: Only save/restore SDR1 if in hypervisor mode

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / powerpc / kernel / vio.c

diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 78a3506..cb92d82 100644 (file)
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -1530,11 +1530,15 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
        const char *cp;
 
        dn = dev->of_node;
-       if (!dn)
-               return -ENODEV;
+       if (!dn) {
+               strcpy(buf, "\n");
+               return strlen(buf);
+       }
        cp = of_get_property(dn, "compatible", NULL);
-       if (!cp)
-               return -ENODEV;
+       if (!cp) {
+               strcpy(buf, "\n");
+               return strlen(buf);
+       }
 
        return sprintf(buf, "vio:T%sS%s\n", vio_dev->type, cp);
 }