mmc: sdhci-pci-gli: Fix GL9763E runtime PM when the system resumes from suspend

When the system resumes from suspend (S3 or S4), the power mode is
MMC_POWER_OFF. In this status, gl9763e_runtime_resume() should not enable
PLL. Add a condition to this function to enable PLL only when the power
mode is MMC_POWER_ON.

Fixes: d607667bb8fa (mmc: sdhci-pci-gli: Add runtime PM for GL9763E)
Signed-off-by: Ben Chuang <benchuanggli@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220520114242.150235-1-benchuanggli@gmail.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 1499a64..f13c08d 100644 (file)
--- a/drivers/mmc/host/sdhci-pci-gli.c
+++ b/drivers/mmc/host/sdhci-pci-gli.c
@@ -982,6 +982,9 @@ static int gl9763e_runtime_resume(struct sdhci_pci_chip *chip)
        struct sdhci_host *host = slot->host;
        u16 clock;
 
+       if (host->mmc->ios.power_mode != MMC_POWER_ON)
+               return 0;
+
        clock = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
 
        clock |= SDHCI_CLOCK_PLL_EN;