Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/kernel/arch/mips/bcm47xx/workarounds.c b/kernel/arch/mips/bcm47xx/workarounds.c
new file mode 100644
index 000000000..e81ce4623
--- /dev/null
+++ b/kernel/arch/mips/bcm47xx/workarounds.c
@@ -0,0 +1,31 @@
+#include "bcm47xx_private.h"
+
+#include <linux/gpio.h>
+#include <bcm47xx_board.h>
+#include <bcm47xx.h>
+
+static void __init bcm47xx_workarounds_netgear_wnr3500l(void)
+{
+	const int usb_power = 12;
+	int err;
+
+	err = gpio_request_one(usb_power, GPIOF_OUT_INIT_HIGH, "usb_power");
+	if (err)
+		pr_err("Failed to request USB power gpio: %d\n", err);
+	else
+		gpio_free(usb_power);
+}
+
+void __init bcm47xx_workarounds(void)
+{
+	enum bcm47xx_board board = bcm47xx_board_get();
+
+	switch (board) {
+	case BCM47XX_BOARD_NETGEAR_WNR3500L:
+		bcm47xx_workarounds_netgear_wnr3500l();
+		break;
+	default:
+		/* No workaround(s) needed */
+		break;
+	}
+}