diff options
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index aba6e10b8605..8eefa7d5fe85 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -934,21 +934,21 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd, /* * If the host controller provides us with an incorrect timeout - * value, just skip the check and use 0xE. The hardware may take + * value, just skip the check and use the maximum. The hardware may take * longer to time out, but that's much better than having a too-short * timeout value. */ if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL) - return 0xE; + return host->max_timeout_count; /* Unspecified command, asume max */ if (cmd == NULL) - return 0xE; + return host->max_timeout_count; data = cmd->data; /* Unspecified timeout, assume max */ if (!data && !cmd->busy_timeout) - return 0xE; + return host->max_timeout_count; /* timeout in us */ target_timeout = sdhci_target_timeout(host, cmd, data); @@ -968,15 +968,15 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd, while (current_timeout < target_timeout) { count++; current_timeout <<= 1; - if (count >= 0xF) + if (count > host->max_timeout_count) break; } - if (count >= 0xF) { + if (count > host->max_timeout_count) { if (!(host->quirks2 & SDHCI_QUIRK2_DISABLE_HW_TIMEOUT)) DBG("Too large timeout 0x%x requested for CMD%d!\n", count, cmd->opcode); - count = 0xE; + count = host->max_timeout_count; } else { *too_big = false; } @@ -1222,6 +1222,7 @@ static int sdhci_external_dma_setup(struct sdhci_host *host, if (!host->mapbase) return -EINVAL; + memset(&cfg, 0, sizeof(cfg)); cfg.src_addr = host->mapbase + SDHCI_BUFFER; cfg.dst_addr = host->mapbase + SDHCI_BUFFER; cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; @@ -3278,8 +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) { @@ -3940,6 +3947,8 @@ struct sdhci_host *sdhci_alloc_host(struct device *dev, */ host->adma_table_cnt = SDHCI_MAX_SEGS * 2 + 1; + host->max_timeout_count = 0xE; + return host; } |