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authorRussell King <rmk+kernel@arm.linux.org.uk>2016-01-26 13:40:11 +0000
committerUlf Hansson <ulf.hansson@linaro.org>2016-02-29 11:03:19 +0100
commitf55c98f7466c2e52125d6ffd69295c0158ac609a (patch)
tree825201d7a1d8237ed42d3830a713249946da7d3e /drivers/mmc
parent47fa961340d2181ebf1165b7651dcbb1b1029163 (diff)
downloadop-kernel-dev-f55c98f7466c2e52125d6ffd69295c0158ac609a.zip
op-kernel-dev-f55c98f7466c2e52125d6ffd69295c0158ac609a.tar.gz
mmc: sdhci: factor out common DMA cleanup in sdhci_finish_data()
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>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/sdhci.c29
1 files changed, 7 insertions, 22 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index b28aa0f..54ab050 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -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;
}
}
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