6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Liming Sun <limings@xxxxxxxxxx>
commit 03749309909935070253accab314288d332a204d upstream.
This commit disables PM runtime in dwcmshc_remove() to avoid the
error message below when reloading the sdhci-of-dwcmshc.ko
sdhci-dwcmshc MLNXBF30:00: Unbalanced pm_runtime_enable!
Fixes: 48fe8fadbe5e ("mmc: sdhci-of-dwcmshc: Add runtime PM operations")
Reviewed-by: David Thompson <davthompson@xxxxxxxxxx>
Signed-off-by: Liming Sun <limings@xxxxxxxxxx>
Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/b9155963ffb12d18375002bf9ac9a3f98b727fc8.1710854108.git.limings@xxxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-of-dwcmshc.c | 28 +++++++++++++++++-----------
1 file changed, 17 insertions(+), 11 deletions(-)
--- a/drivers/mmc/host/sdhci-of-dwcmshc.c
+++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
@@ -584,6 +584,17 @@ free_pltfm:
return err;
}
+static void dwcmshc_disable_card_clk(struct sdhci_host *host)
+{
+ u16 ctrl;
+
+ ctrl = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+ if (ctrl & SDHCI_CLOCK_CARD_EN) {
+ ctrl &= ~SDHCI_CLOCK_CARD_EN;
+ sdhci_writew(host, ctrl, SDHCI_CLOCK_CONTROL);
+ }
+}
+
static void dwcmshc_remove(struct platform_device *pdev)
{
struct sdhci_host *host = platform_get_drvdata(pdev);
@@ -591,8 +602,14 @@ static void dwcmshc_remove(struct platfo
struct dwcmshc_priv *priv = sdhci_pltfm_priv(pltfm_host);
struct rk35xx_priv *rk_priv = priv->priv;
+ pm_runtime_get_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+ pm_runtime_put_noidle(&pdev->dev);
+
sdhci_remove_host(host, 0);
+ dwcmshc_disable_card_clk(host);
+
clk_disable_unprepare(pltfm_host->clk);
clk_disable_unprepare(priv->bus_clk);
if (rk_priv)
@@ -683,17 +700,6 @@ static void dwcmshc_enable_card_clk(stru
sdhci_writew(host, ctrl, SDHCI_CLOCK_CONTROL);
}
}
-
-static void dwcmshc_disable_card_clk(struct sdhci_host *host)
-{
- u16 ctrl;
-
- ctrl = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
- if (ctrl & SDHCI_CLOCK_CARD_EN) {
- ctrl &= ~SDHCI_CLOCK_CARD_EN;
- sdhci_writew(host, ctrl, SDHCI_CLOCK_CONTROL);
- }
-}
static int dwcmshc_runtime_suspend(struct device *dev)
{
