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mmc: dw_mmc: Regression fix for non-IDMAC DMA

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3ec7699d3bb1b0ee7 ("mmc: dw_mmc: Add support for pre_req and post_req")
broke non-IDMAC DMA, because dw_mci_pre_dma_transfer() is valid only if
using internal DMA. In case of using other DMA it returns -ENOSYS. It
prevents the DMA operations.  This patch makes dw_mci_pre_dma_transfer()
effective in all DMA cases again.

Reported-by: James Hogan <james@albanarts.com>
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Seungwon Jeon 2012-02-20 11:01:43 +09:00 committed by Chris Ball
parent 9beee912a3
commit 885c3e800c
1 changed files with 9 additions and 16 deletions
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25
drivers/mmc/host/dw_mmc.c
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@ -429,6 +429,15 @@ static int dw_mci_idmac_init(struct dw_mci *host)
return 0;
}
static struct dw_mci_dma_ops dw_mci_idmac_ops = {
.init = dw_mci_idmac_init,
.start = dw_mci_idmac_start_dma,
.stop = dw_mci_idmac_stop_dma,
.complete = dw_mci_idmac_complete_dma,
.cleanup = dw_mci_dma_cleanup,
};
#endif /* CONFIG_MMC_DW_IDMAC */
static int dw_mci_pre_dma_transfer(struct dw_mci *host,
struct mmc_data *data,
bool next)
@ -468,22 +477,6 @@ static int dw_mci_pre_dma_transfer(struct dw_mci *host,
return sg_len;
}
static struct dw_mci_dma_ops dw_mci_idmac_ops = {
.init = dw_mci_idmac_init,
.start = dw_mci_idmac_start_dma,
.stop = dw_mci_idmac_stop_dma,
.complete = dw_mci_idmac_complete_dma,
.cleanup = dw_mci_dma_cleanup,
};
#else
static int dw_mci_pre_dma_transfer(struct dw_mci *host,
struct mmc_data *data,
bool next)
{
return -ENOSYS;
}
#endif /* CONFIG_MMC_DW_IDMAC */
static void dw_mci_pre_req(struct mmc_host *mmc,
struct mmc_request *mrq,
bool is_first_req)