drivers/char: replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/drm/i830_drv.h b/drivers/char/drm/i830_drv.h
index 4caba8c..b5bf8cc 100644
--- a/drivers/char/drm/i830_drv.h
+++ b/drivers/char/drm/i830_drv.h
@@ -158,7 +158,7 @@
 	if (I830_VERBOSE)				\
 		printk("BEGIN_LP_RING(%d)\n", (n));	\
 	if (dev_priv->ring.space < n*4)			\
-		i830_wait_ring(dev, n*4, __FUNCTION__);		\
+		i830_wait_ring(dev, n*4, __func__);		\
 	outcount = 0;					\
 	outring = dev_priv->ring.tail;			\
 	ringmask = dev_priv->ring.tail_mask;		\