Since it's no more sense to set parent for dummy clock,
so we can just ignore it to mute failed message.

Signed-off-by: Jon Hunter <redacted>
Signed-off-by: Zumeng Chen <redacted>
---
 arch/arm/plat-omap/clock.c  |    4 ++++
 drivers/mfd/omap-usb-host.c |    2 +-
 2 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index 62ec5c4..c7e26e4 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c

@@ -149,6 +149,10 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
 	if (!arch_clock || !arch_clock->clk_set_parent)
 		return ret;
 
+	/* If the clock is a dummy clock just return */
+	if (clk == &dummy_ck)
+		return 0;
+
 	spin_lock_irqsave(&clockfw_lock, flags);
 	if (clk->usecount == 0) {
 		ret = arch_clock->clk_set_parent(clk, parent);

diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 7e96bb2..c9d27c4 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c

@@ -699,7 +699,7 @@ static int __devinit usbhs_omap_probe(struct platform_device *pdev)
 	}
 
 	if (is_ehci_phy_mode(pdata->port_mode[0])) {
-		/* for OMAP3 , the clk set paretn fails */
+		/* for OMAP3 , the clk set parent fails */