ENGR00314571 pcie: resolve one compile warning on pcie pm

resolve one compile warning on pcie pm

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

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c
index 91c7ec39dc49..674a1537fae4 100644
--- a/arch/arm/mach-imx/pm-imx6.c
+++ b/arch/arm/mach-imx/pm-imx6.c
@@ -339,6 +339,11 @@ static int imx6_pm_enter(suspend_state_t state)
          * "PCIe PCIe does not support L2 Power Down"
          */
         if (IS_ENABLED(CONFIG_PCI_IMX6) && !cpu_is_imx6sx()) {
+                g = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
+                if (IS_ERR(g)) {
+                        pr_err("failed to find fsl,imx6q-iomux-gpr regmap\n");
+                        return PTR_ERR(g);
+                }
                 regmap_update_bits(g, IOMUXC_GPR1, IMX6Q_GPR1_PCIE_TEST_PD,
                                 !IMX6Q_GPR1_PCIE_TEST_PD);
         }