When calling sdhci_add_host(), the controller is already suspended. It causes to read 0 in registers. Increment the device's usage counter before calling sdhci_add_host(), decrement it after and put it in suspend if it is possible. Signed-off-by: Ludovic Desroches <ludovic.desroches@xxxxxxxxx> Fixes: "mmc: sdhci-of-at91: add PM support" --- drivers/mmc/host/sdhci-of-at91.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c index 81ab9db..7e7d8f0 100644 --- a/drivers/mmc/host/sdhci-of-at91.c +++ b/drivers/mmc/host/sdhci-of-at91.c @@ -200,6 +200,7 @@ static int sdhci_at91_probe(struct platform_device *pdev) sdhci_get_of_property(pdev); + pm_runtime_get_noresume(&pdev->dev); pm_runtime_set_active(&pdev->dev); pm_runtime_enable(&pdev->dev); pm_runtime_set_autosuspend_delay(&pdev->dev, 50); @@ -209,6 +210,8 @@ static int sdhci_at91_probe(struct platform_device *pdev) if (ret) goto pm_runtime_disable; + pm_runtime_put_autosuspend(&pdev->dev); + return 0; pm_runtime_disable: -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
