hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

sdhci-pxav3: Fix runtime PM initialization 

Commit bb691ae464 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>
This commit is contained in:
Daniel Drake 2013-06-27 11:46:29 -04:00 committed by Chris Ball
parent 5a36d6bcdf
commit 0dcaa2499b
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/mmc/host/sdhci-pxav3.c
View File

@ -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: