diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index a7a5df673b0f..97461e20425d 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -216,6 +216,8 @@ #define ESDHC_FLAG_DUMMY_PAD BIT(19) #define ESDHC_AUTO_TUNING_WINDOW 3 +/* 100ms timeout for data inhibit */ +#define ESDHC_DATA_INHIBIT_WAIT_US 100000 enum wp_types { ESDHC_WP_NONE, /* no WP, neither controller nor gpio */ @@ -1453,6 +1455,22 @@ static void esdhc_set_uhs_signaling(struct sdhci_host *host, unsigned timing) static void esdhc_reset(struct sdhci_host *host, u8 mask) { + u32 present_state; + int ret; + + /* + * For data or full reset, ensure any active data transfer completes + * before resetting to avoid system hang. + */ + if (mask & (SDHCI_RESET_DATA | SDHCI_RESET_ALL)) { + ret = readl_poll_timeout_atomic(host->ioaddr + ESDHC_PRSSTAT, present_state, + !(present_state & SDHCI_DATA_INHIBIT), 2, + ESDHC_DATA_INHIBIT_WAIT_US); + if (ret == -ETIMEDOUT) + dev_warn(mmc_dev(host->mmc), + "timeout waiting for data transfer completion\n"); + } + sdhci_and_cqhci_reset(host, mask); sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);