diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 52 |
1 files changed, 25 insertions, 27 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 54ab050bc47b..1278a8dfeebe 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -53,8 +53,6 @@ static void sdhci_finish_data(struct sdhci_host *); static void sdhci_finish_command(struct sdhci_host *); static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable); -static int sdhci_pre_dma_transfer(struct sdhci_host *host, - struct mmc_data *data); static int sdhci_do_get_cd(struct sdhci_host *host); #ifdef CONFIG_PM @@ -428,6 +426,31 @@ static void sdhci_transfer_pio(struct sdhci_host *host) DBG("PIO transfer complete.\n"); } +static int sdhci_pre_dma_transfer(struct sdhci_host *host, + struct mmc_data *data) +{ + int sg_count; + + if (data->host_cookie == COOKIE_MAPPED) { + data->host_cookie = COOKIE_GIVEN; + return data->sg_count; + } + + WARN_ON(data->host_cookie == COOKIE_GIVEN); + + sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, + data->flags & MMC_DATA_WRITE ? + DMA_TO_DEVICE : DMA_FROM_DEVICE); + + if (sg_count == 0) + return -ENOSPC; + + data->sg_count = sg_count; + data->host_cookie = COOKIE_MAPPED; + + return sg_count; +} + static char *sdhci_kmap_atomic(struct scatterlist *sg, unsigned long *flags) { local_irq_save(*flags); @@ -2080,31 +2103,6 @@ static void sdhci_post_req(struct mmc_host *mmc, struct mmc_request *mrq, data->host_cookie = COOKIE_UNMAPPED; } -static int sdhci_pre_dma_transfer(struct sdhci_host *host, - struct mmc_data *data) -{ - int sg_count; - - if (data->host_cookie == COOKIE_MAPPED) { - data->host_cookie = COOKIE_GIVEN; - return data->sg_count; - } - - WARN_ON(data->host_cookie == COOKIE_GIVEN); - - sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, - data->flags & MMC_DATA_WRITE ? - DMA_TO_DEVICE : DMA_FROM_DEVICE); - - if (sg_count == 0) - return -ENOSPC; - - data->sg_count = sg_count; - data->host_cookie = COOKIE_MAPPED; - - return sg_count; -} - static void sdhci_pre_req(struct mmc_host *mmc, struct mmc_request *mrq, bool is_first_req) { |