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mmc: sdhci: always unmap a mapped data transfer in sdhci_post_req() 

If the host cookie indicates that the data buffers of a request are
mapped at sdhci_post_req() time, always unmap the data buffers.

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>
hifive-unleashed-5.1
Russell King 2016-01-26 13:40:32 +00:00 committed by Ulf Hansson
parent c0999b720c
commit f48f039cd2
1 changed files with 1 additions and 2 deletions
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3
drivers/mmc/host/sdhci.c
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@ -2078,8 +2078,7 @@ static void sdhci_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
struct sdhci_host *host = mmc_priv(mmc);
struct mmc_data *data = mrq->data;
if (data->host_cookie == COOKIE_GIVEN ||
data->host_cookie == COOKIE_MAPPED)
if (data->host_cookie != COOKIE_UNMAPPED)
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
data->flags & MMC_DATA_WRITE ?
DMA_TO_DEVICE : DMA_FROM_DEVICE);