1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c
index f981f7d1f6e3..ad13f4240c49 100644
--- a/drivers/mmc/host/rtsx_pci_sdmmc.c
+++ b/drivers/mmc/host/rtsx_pci_sdmmc.c
@@ -57,6 +57,9 @@ struct realtek_pci_sdmmc {
         bool                    eject;
         bool                    initial_mode;
         bool                    ddr_mode;
+        int                     power_state;
+#define SDMMC_POWER_ON          1
+#define SDMMC_POWER_OFF         0
 };
 
 static inline struct device *sdmmc_dev(struct realtek_pci_sdmmc *host)
@@ -765,6 +768,9 @@ static int sd_power_on(struct realtek_pci_sdmmc *host)
         struct rtsx_pcr *pcr = host->pcr;
         int err;
 
+        if (host->power_state == SDMMC_POWER_ON)
+                return 0;
+
         rtsx_pci_init_cmd(pcr);
         rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SELECT, 0x07, SD_MOD_SEL);
         rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SHARE_MODE,
@@ -787,6 +793,7 @@ static int sd_power_on(struct realtek_pci_sdmmc *host)
         if (err < 0)
                 return err;
 
+        host->power_state = SDMMC_POWER_ON;
         return 0;
 }
 
@@ -795,6 +802,8 @@ static int sd_power_off(struct realtek_pci_sdmmc *host)
         struct rtsx_pcr *pcr = host->pcr;
         int err;
 
+        host->power_state = SDMMC_POWER_OFF;
+
         rtsx_pci_init_cmd(pcr);
 
         rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, SD_CLK_EN, 0);
@@ -1260,6 +1269,7 @@ static int rtsx_pci_sdmmc_drv_probe(struct platform_device *pdev)
         host->pcr = pcr;
         host->mmc = mmc;
         host->pdev = pdev;
+        host->power_state = SDMMC_POWER_OFF;
         platform_set_drvdata(pdev, host);
         pcr->slots[RTSX_SD_CARD].p_dev = pdev;
         pcr->slots[RTSX_SD_CARD].card_event = rtsx_pci_sdmmc_card_event;