AuxXxilium/linux_dsm_epyc7002
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mmc: sdhci: restore the enabled dma when do reset all

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If dma is enabled, it'll be cleared when reset all is performed, this can
be observed on some platforms, such as P2041 which has a version 2.3
controller, but platform like P4080 which has a version 2.2 controller,
does not suffer this, so we will check if the dma is enabled, we should
restore it after reset all.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Shaohui Xie 2011-12-29 16:33:00 +08:00 committed by Chris Ball
parent 8234e86960
commit 3abc1e8042
1 changed files with 5 additions and 0 deletions
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5
drivers/mmc/host/sdhci.c
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@ -212,6 +212,11 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, ier);
if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
if ((host->ops->enable_dma) && (mask & SDHCI_RESET_ALL))
host->ops->enable_dma(host);
}
}
static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);