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mmc: sdhci: move sdhci_pre_dma_transfer() 

Move sdhci_pre_dma_transfer() to avoid needing to declare this function
before use.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Russell King 2016-01-26 13:40:16 +00:00 committed by Ulf Hansson
parent f55c98f746
commit 48857d9b78
1 changed files with 25 additions and 27 deletions
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52
drivers/mmc/host/sdhci.c
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@ -53,8 +53,6 @@ static void sdhci_finish_data(struct sdhci_host *);
static void sdhci_finish_command(struct sdhci_host *); static void sdhci_finish_command(struct sdhci_host *);
static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable); 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); static int sdhci_do_get_cd(struct sdhci_host *host);
#ifdef CONFIG_PM #ifdef CONFIG_PM
@ -428,6 +426,31 @@ static void sdhci_transfer_pio(struct sdhci_host *host)
DBG("PIO transfer complete.\n"); 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) static char *sdhci_kmap_atomic(struct scatterlist *sg, unsigned long *flags)
{ {
local_irq_save(*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; 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, static void sdhci_pre_req(struct mmc_host *mmc, struct mmc_request *mrq,
bool is_first_req) bool is_first_req)
{ {