mmc: sdhci-pci-gli: Fix build error unused-function

If CONFIG_PM is not set.

make ARCH=x86_64 CROSS_COMPILE=x86_64-linux-gnu-, will be failed, like this:

drivers/mmc/host/sdhci-pci-gli.c:834:13: error: ‘gl9763e_set_low_power_negotiation’ defined but not used [-Werror=unused-function]
 static void gl9763e_set_low_power_negotiation(struct sdhci_pci_slot *slot, bool enable)
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[3]: *** [drivers/mmc/host/sdhci-pci-gli.o] Error 1

To fix building warning, wrap all related code with CONFIG_PM.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Ren Zhijie <renzhijie2@huawei.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20220619104712.125364-1-renzhijie2@huawei.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c
index a76506adc206dc610ec696210e36dc1f5c751c48..4d509f65618870705e6fa2f8fa4198c547d9f033 100644 (file)
--- a/drivers/mmc/host/sdhci-pci-gli.c
+++ b/drivers/mmc/host/sdhci-pci-gli.c
@@ -831,31 +831,6 @@ static void sdhci_gl9763e_dumpregs(struct mmc_host *mmc)
        sdhci_dumpregs(mmc_priv(mmc));
 }
 
-static void gl9763e_set_low_power_negotiation(struct sdhci_pci_slot *slot, bool enable)
-{
-       struct pci_dev *pdev = slot->chip->pdev;
-       u32 value;
-
-       pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
-       value &= ~GLI_9763E_VHS_REV;
-       value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_W);
-       pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
-
-       pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG, &value);
-
-       if (enable)
-               value &= ~GLI_9763E_CFG_LPSN_DIS;
-       else
-               value |= GLI_9763E_CFG_LPSN_DIS;
-
-       pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG, value);
-
-       pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
-       value &= ~GLI_9763E_VHS_REV;
-       value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R);
-       pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
-}
-
 static void sdhci_gl9763e_cqe_pre_enable(struct mmc_host *mmc)
 {
        struct cqhci_host *cq_host = mmc->cqe_private;
@@ -991,6 +966,31 @@ static void gli_set_gl9763e(struct sdhci_pci_slot *slot)
 }
 
 #ifdef CONFIG_PM
+static void gl9763e_set_low_power_negotiation(struct sdhci_pci_slot *slot, bool enable)
+{
+       struct pci_dev *pdev = slot->chip->pdev;
+       u32 value;
+
+       pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
+       value &= ~GLI_9763E_VHS_REV;
+       value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_W);
+       pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
+
+       pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG, &value);
+
+       if (enable)
+               value &= ~GLI_9763E_CFG_LPSN_DIS;
+       else
+               value |= GLI_9763E_CFG_LPSN_DIS;
+
+       pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG, value);
+
+       pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
+       value &= ~GLI_9763E_VHS_REV;
+       value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R);
+       pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
+}
+
 static int gl9763e_runtime_suspend(struct sdhci_pci_chip *chip)
 {
        struct sdhci_pci_slot *slot = chip->slots[0];