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mmc: sdhci: factor out common DMA cleanup in sdhci_finish_data()

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sdhci_finish_data() has two paths which result in identical DMA cleanup.
One is when SDHCI_USE_ADMA is clear, and the other is just before when
SDHCI_USE_ADMA is set, and is performed within sdhci_adma_table_post().

Simplify the code by removing the 'else' and eliminating the duplicate
inside sdhci_adma_table_post().

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 13:40:11 +00:00 committed by Ulf Hansson
parent 47fa961340
commit f55c98f746
1 changed files with 7 additions and 22 deletions
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29
drivers/mmc/host/sdhci.c
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@ -552,19 +552,12 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
static void sdhci_adma_table_post(struct sdhci_host *host,
struct mmc_data *data)
{
int direction;
struct scatterlist *sg;
int i, size;
void *align;
char *buffer;
unsigned long flags;
if (data->flags & MMC_DATA_READ)
direction = DMA_FROM_DEVICE;
else
direction = DMA_TO_DEVICE;
if (data->flags & MMC_DATA_READ) {
bool has_unaligned = false;
@ -577,7 +570,7 @@ static void sdhci_adma_table_post(struct sdhci_host *host,
if (has_unaligned) {
dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg,
data->sg_len, direction);
data->sg_len, DMA_FROM_DEVICE);
align = host->align_buffer;
@ -595,12 +588,6 @@ static void sdhci_adma_table_post(struct sdhci_host *host,
}
}
}
if (data->host_cookie == COOKIE_MAPPED) {
dma_unmap_sg(mmc_dev(host->mmc), data->sg,
data->sg_len, direction);
data->host_cookie = COOKIE_UNMAPPED;
}
}
static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd)
@ -920,14 +907,12 @@ static void sdhci_finish_data(struct sdhci_host *host)
if (host->flags & SDHCI_REQ_USE_DMA) {
if (host->flags & SDHCI_USE_ADMA)
sdhci_adma_table_post(host, data);
else {
if (data->host_cookie == COOKIE_MAPPED) {
dma_unmap_sg(mmc_dev(host->mmc),
data->sg, data->sg_len,
(data->flags & MMC_DATA_READ) ?
DMA_FROM_DEVICE : DMA_TO_DEVICE);
data->host_cookie = COOKIE_UNMAPPED;
}
if (data->host_cookie == COOKIE_MAPPED) {
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
(data->flags & MMC_DATA_READ) ?
DMA_FROM_DEVICE : DMA_TO_DEVICE);
data->host_cookie = COOKIE_UNMAPPED;
}
}