drivers/ide/* - compile warning cleanup

diff -Nurdp -X dontdiff-osdl linux-2.6.11-rc3-mm-original/drivers/ide/ide-tape.c linux-2.6.11-rc3-mm/drivers/ide/ide-tape.c
@@ -2644,7 +2644,12 @@ static void idetape_copy_stage_from_user
 		}
 #endif /* IDETAPE_DEBUG_BUGS */
 		count = min((unsigned int)(bh->b_size - atomic_read(&bh->b_count)), (unsigned int)n);
-		copy_from_user(bh->b_data + atomic_read(&bh->b_count), buf, count);
+		if(copy_from_user(bh->b_data + atomic_read(&bh->b_count), buf, count)) {
+#if IDETAPE_DEBUG_BUGS
+			printk(KERN_ERR "ide-tape/%s: copy_from_user failed!\n",__FUNCTION__);
+#endif /* IDETAPE_DEBUG_BUGS */
+			return;
+		}
 		n -= count;
 		atomic_add(count, &bh->b_count);
 		buf += count;

@@ -2671,7 +2676,12 @@ static void idetape_copy_stage_to_user (
 		}
 #endif /* IDETAPE_DEBUG_BUGS */
 		count = min(tape->b_count, n);
-		copy_to_user(buf, tape->b_data, count);
+		if(copy_to_user(buf, tape->b_data, count)) {
+#if IDETAPE_DEBUG_BUGS
+			printk(KERN_ERR "ide-tape/%s: copy_to_user failed!\n",__FUNCTION__);
+#endif /* IDETAPE_DEBUG_BUGS */
+			return;
+		}
 		n -= count;
 		tape->b_data += count;
 		tape->b_count -= count;