diff options
| author | Daniel Drake <dsd@laptop.org> | 2013-06-27 17:46:29 +0200 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2013-06-27 18:39:23 +0200 |
| commit | 0dcaa2499b7d111bd70da5b0976c34210c850fb3 (patch) | |
| tree | 7a3f394ef96c6c82660c2c41218cd614e9671b96 /drivers/mmc | |
| parent | mmc: core: Add DT-bindings for MMC_CAP2_FULL_PWR_CYCLE (diff) | |
| download | linux-0dcaa2499b7d111bd70da5b0976c34210c850fb3.tar.xz linux-0dcaa2499b7d111bd70da5b0976c34210c850fb3.zip | |
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.c | 7 |
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: |