ENGR00170244-5 ARM: AHCI: Enable PDDQ mode on mx53 loco board

In order to save the power consumption, enable the
PDDQ mode of AHCI PHY when there is no sata disk
on the port

Signed-off-by: Richard Zhu <r65037@freescale.com>

diff --git a/arch/arm/mach-mx5/board-mx53_loco.c b/arch/arm/mach-mx5/board-mx53_loco.c
index 56f88d185a95bf4d1ab4db74be262b8789a61dcd..257933af01776747496138c5b012226e00610e7a 100755 (executable)
--- a/arch/arm/mach-mx5/board-mx53_loco.c
+++ b/arch/arm/mach-mx5/board-mx53_loco.c
@@ -480,9 +480,9 @@ static int mx53_loco_sata_init(struct device *dev, void __iomem *addr)
        tmpdata = clk_get_rate(clk) / 1000;
        clk_put(clk);
 
-       sata_init(addr, tmpdata);
-
-       return ret;
+       ret = sata_init(addr, tmpdata);
+       if (ret == 0)
+               return ret;
 
 release_sata_ref_clk:
        clk_disable(sata_ref_clk);