linux-kernel - [PATCH 5.18 312/339] mmc: sdhci-pci-gli: Fix GL9763E runtime PM when the system resumes from suspend

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Message-Id: <20220613094936.215695755@linuxfoundation.org>
Date:   Mon, 13 Jun 2022 12:12:17 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ben Chuang <benchuanggli@...il.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH 5.18 312/339] mmc: sdhci-pci-gli: Fix GL9763E runtime PM when the system resumes from suspend

From: Ben Chuang <benchuanggli@...il.com>

commit 291e7d52d19f114cad6cbf802f3f19ef12a011f8 upstream.

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@...il.com>
Cc: stable@...r.kernel.org
Link: https://lore.kernel.org/r/20220520114242.150235-1-benchuanggli@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/mmc/host/sdhci-pci-gli.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/mmc/host/sdhci-pci-gli.c
+++ b/drivers/mmc/host/sdhci-pci-gli.c
@@ -972,6 +972,9 @@ static int gl9763e_runtime_resume(struct
 	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;