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mmc: core: fix init controller performance regression, updated patch 

Add MMC_CAP2_NO_PRESCAN_POWERUP to sdhci-pci.c also, use mmc_power_off()
for MMC_CAP2_NO_PRESCAN_POWERUP.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
[cjb: previously applied v1 of this patch instead of v4]
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Adrian Hunter 2013-04-15 11:27:25 -04:00 committed by Chris Ball
parent e48fc15aa2
commit a08b17be8b
2 changed files with 4 additions and 1 deletions
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4
drivers/mmc/core/core.c
View File

@ -2416,7 +2416,9 @@ void mmc_start_host(struct mmc_host *host)
{
host->f_init = max(freqs[0], host->f_min);
host->rescan_disable = 0;
if (!(host->caps2 & MMC_CAP2_NO_PRESCAN_POWERUP))
if (host->caps2 & MMC_CAP2_NO_PRESCAN_POWERUP)
mmc_power_off(host);
else
mmc_power_up(host);
mmc_detect_change(host, 0);
}

1
drivers/mmc/host/sdhci-pci.c
View File

@ -1280,6 +1280,7 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot(
host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;
host->mmc->slotno = slotno;
host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
ret = sdhci_add_host(host);
if (ret)