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authorDaniel Drake <dsd@laptop.org>2013-06-27 11:46:29 -0400
committerChris Ball <cjb@laptop.org>2013-06-27 12:39:23 -0400
commit0dcaa2499b7d111bd70da5b0976c34210c850fb3 (patch)
tree7a3f394ef96c6c82660c2c41218cd614e9671b96 /drivers/mmc
parent5a36d6bcdf23e408da1d0cbb5d5ad2a26089e9ca (diff)
downloadlinux-0dcaa2499b7d111bd70da5b0976c34210c850fb3.tar.bz2
sdhci-pxav3: Fix runtime PM initialization
Commit bb691ae464b77d30e74c66480e98d74e88d6b194 breaks boot on OLPC XO-4, it hangs somewhere inside sdhci_add_host. When pm_runtime_set_autosuspend_delay() was being called, the device's usage counter was 0, causing the PM layer to runtime-suspend the device. We then went on to call sdhci_add_host() on a suspended device, which hung. Fix this by making the driver consistent with the omap_hsmmc driver, both in terms of runtime PM initialization and error handling. Now the device is not runtime-suspended until we exit the probe routine. Signed-off-by: Daniel Drake <dsd@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/sdhci-pxav3.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index d29f81097334..bf99359a3a90 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -287,18 +287,15 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
}
}
- pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
+ pm_runtime_get_sync(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, PXAV3_RPM_DELAY_MS);
pm_runtime_use_autosuspend(&pdev->dev);
pm_suspend_ignore_children(&pdev->dev, 1);
- pm_runtime_get_noresume(&pdev->dev);
ret = sdhci_add_host(host);
if (ret) {
dev_err(&pdev->dev, "failed to add host\n");
- pm_runtime_forbid(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
goto err_add_host;
}
@@ -318,6 +315,8 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
err_of_parse:
err_cd_req:
err_add_host:
+ pm_runtime_put_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
clk_disable_unprepare(clk);
clk_put(clk);
err_clk_get: