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mmc: tmio: move runtime PM enablement to the driver implementations 

Both the Renesas and Uniphier implementations perform actions which
affect runtime PM before calling into the core tmio_mmc_host_probe()
which enabled runtime PM. Move pm_runtime_enable() from the core and
tmio_mmc_host_probe() into each drivers probe() so it can be called
before any clocks or other resources are switched on.

Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Niklas Söderlund 2019-04-11 00:22:40 +02:00 committed by Ulf Hansson
parent fdc4e755f6
commit 7ff2131933
4 changed files with 23 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/mmc/host/renesas_sdhi_core.c
View File

@ -770,6 +770,8 @@ int renesas_sdhi_probe(struct platform_device *pdev,
/* All SDHI have SDIO status bits which must be 1 */
mmc_data->flags |= TMIO_MMC_SDIO_STATUS_SETBITS;
pm_runtime_enable(&pdev->dev);
ret = renesas_sdhi_clk_enable(host);
if (ret)
goto efree;
@ -850,6 +852,8 @@ edisclk:
efree:
tmio_mmc_host_free(host);
pm_runtime_disable(&pdev->dev);
return ret;
}
EXPORT_SYMBOL_GPL(renesas_sdhi_probe);
@ -861,6 +865,8 @@ int renesas_sdhi_remove(struct platform_device *pdev)
tmio_mmc_host_remove(host);
renesas_sdhi_clk_disable(host);
pm_runtime_disable(&pdev->dev);
return 0;
}
EXPORT_SYMBOL_GPL(renesas_sdhi_remove);

5
drivers/mmc/host/tmio_mmc.c
View File

@ -172,6 +172,8 @@ static int tmio_mmc_probe(struct platform_device *pdev)
host->mmc->f_max = pdata->hclk;
host->mmc->f_min = pdata->hclk / 512;
pm_runtime_enable(&pdev->dev);
ret = tmio_mmc_host_probe(host);
if (ret)
goto host_free;
@ -191,6 +193,7 @@ host_remove:
tmio_mmc_host_remove(host);
host_free:
tmio_mmc_host_free(host);
pm_runtime_disable(&pdev->dev);
cell_disable:
if (cell->disable)
cell->disable(pdev);
@ -207,6 +210,8 @@ static int tmio_mmc_remove(struct platform_device *pdev)
if (cell->disable)
cell->disable(pdev);
pm_runtime_disable(&pdev->dev);
return 0;
}

11
drivers/mmc/host/tmio_mmc_core.c
View File

@ -1153,6 +1153,15 @@ void tmio_mmc_host_free(struct tmio_mmc_host *host)
}
EXPORT_SYMBOL_GPL(tmio_mmc_host_free);
/**
* tmio_mmc_host_probe() - Common probe for all implementations
* @_host: Host to probe
*
* Perform tasks common to all implementations probe functions.
*
* The caller should have called pm_runtime_enable() prior to calling
* the common probe function.
*/
int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
{
struct platform_device *pdev = _host->pdev;
@ -1261,7 +1270,6 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
pm_runtime_set_active(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_enable(&pdev->dev);
ret = mmc_add_host(mmc);
if (ret)
@ -1297,7 +1305,6 @@ void tmio_mmc_host_remove(struct tmio_mmc_host *host)
pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
}
EXPORT_SYMBOL_GPL(tmio_mmc_host_remove);

3
drivers/mmc/host/uniphier-sd.c
View File

@ -631,6 +631,7 @@ static int uniphier_sd_probe(struct platform_device *pdev)
host->clk_disable = uniphier_sd_clk_disable;
host->set_clock = uniphier_sd_set_clock;
pm_runtime_enable(&pdev->dev);
ret = uniphier_sd_clk_enable(host);
if (ret)
goto free_host;
@ -652,6 +653,7 @@ static int uniphier_sd_probe(struct platform_device *pdev)
free_host:
tmio_mmc_host_free(host);
pm_runtime_disable(&pdev->dev);
return ret;
}
@ -662,6 +664,7 @@ static int uniphier_sd_remove(struct platform_device *pdev)
tmio_mmc_host_remove(host);
uniphier_sd_clk_disable(host);
pm_runtime_disable(&pdev->dev);
return 0;
}