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Commit 3498a2f3 authored by Bao D. Nguyen's avatar Bao D. Nguyen
Browse files

mmc: core: Send SD card initialization sequence in deferred resume path 



During suspend the SD card power is removed. With deferred resume
feature enabled, during resume the SD card power is turned on; however,
the full SD card initialization sequence is missing. As a result, the
first SD card access fails with command timeouts. Add SD card
initialization to the deferred resume path so that the SD card is
initialized to fully operational state.

Change-Id: I85e02aa78016644432e694bcbc009869035d0b58
Signed-off-by: default avatarBao D. Nguyen <nguyenb@codeaurora.org>
parent 40628cae

drivers/mmc/core/mmc.c

+5 −2
Original line number Diff line number Diff line
@@ -2863,10 +2863,13 @@ static int mmc_resume(struct mmc_host *host) 
	int err = 0;



	MMC_TRACE(host, "%s: Enter\n", __func__);

	err = _mmc_resume(host);

	pm_runtime_set_active(&host->card->dev);

	pm_runtime_mark_last_busy(&host->card->dev);

	pm_runtime_enable(&host->card->dev);



	MMC_TRACE(host, "%s: Exit err: %d\n", __func__, err);

	return 0;



	return err;

}



#define MAX_DEFER_SUSPEND_COUNTER 20

drivers/mmc/core/sd.c

+5 −2
Original line number Diff line number Diff line
@@ -1348,10 +1348,13 @@ static int mmc_sd_resume(struct mmc_host *host) 
	int err = 0;



	MMC_TRACE(host, "%s: Enter\n", __func__);

	err = _mmc_sd_resume(host);

	pm_runtime_set_active(&host->card->dev);

	pm_runtime_mark_last_busy(&host->card->dev);

	pm_runtime_enable(&host->card->dev);



	MMC_TRACE(host, "%s: Exit err: %d\n", __func__, err);

	return 0;



	return err;

}



/*