diff options
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 36f15f81a6af..8eefa7d5fe85 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3279,8 +3279,14 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) { u32 command; - /* CMD19 generates _only_ Buffer Read Ready interrupt */ - if (intmask & SDHCI_INT_DATA_AVAIL) { + /* + * CMD19 generates _only_ Buffer Read Ready interrupt if + * use sdhci_send_tuning. + * Need to exclude this case: PIO mode and use mmc_send_tuning, + * If not, sdhci_transfer_pio will never be called, make the + * SDHCI_INT_DATA_AVAIL always there, stuck in irq storm. + */ + if (intmask & SDHCI_INT_DATA_AVAIL && !host->data) { command = SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)); if (command == MMC_SEND_TUNING_BLOCK || command == MMC_SEND_TUNING_BLOCK_HS200) { |