From c9c75e4cf3d2fe4c9789fd0e8b34f36408fae5bb Mon Sep 17 00:00:00 2001
From: "Robert P. J. Day" <rpjday@crashcourse.ca>
Date: Fri, 10 Feb 2012 06:31:52 -0500
Subject: [PATCH] Add comment explaining what cortex_a9_rev() is doing.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/mach-omap/omap4_generic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-omap/omap4_generic.c b/arch/arm/mach-omap/omap4_generic.c
index 5223c7e75..c6e46e6a3 100644
--- a/arch/arm/mach-omap/omap4_generic.c
+++ b/arch/arm/mach-omap/omap4_generic.c
@@ -352,6 +352,7 @@ static unsigned int cortex_a9_rev(void)
 
 	unsigned int i;
 
+	/* Read Main ID Register (MIDR) */
 	asm ("mrc p15, 0, %0, c0, c0, 0" : "=r" (i));
 
 	return i;