X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Ftime%2Ftick-oneshot.c;h=0258d3115d546a4c16c0f38e292120d077a8bd2c;hb=bed04a4413376265746053be2a9cfbfc80c98ec9;hp=f6997ab0c3c9c1101c9df8c9bd433e4126cc4a40;hpb=445c9b5507b9d09a2e9b0b4dbb16517708aa40e6;p=linux-2.6

diff --git a/kernel/time/tick-oneshot.c b/kernel/time/tick-oneshot.c
index f6997ab0c3..0258d3115d 100644
--- a/kernel/time/tick-oneshot.c
+++ b/kernel/time/tick-oneshot.c
@@ -73,8 +73,21 @@ int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *))
 	struct clock_event_device *dev = td->evtdev;
 
 	if (!dev || !(dev->features & CLOCK_EVT_FEAT_ONESHOT) ||
-	    !tick_device_is_functional(dev))
+		    !tick_device_is_functional(dev)) {
+
+		printk(KERN_INFO "Clockevents: "
+		       "could not switch to one-shot mode:");
+		if (!dev) {
+			printk(" no tick device\n");
+		} else {
+			if (!tick_device_is_functional(dev))
+				printk(" %s is not functional.\n", dev->name);
+			else
+				printk(" %s does not support one-shot mode.\n",
+				       dev->name);
+		}
 		return -EINVAL;
+	}
 
 	td->mode = TICKDEV_MODE_ONESHOT;
 	dev->event_handler = handler;