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yaml
---
r: 332842
b: refs/heads/master
c: 897b69e
h: refs/heads/master
v: v3
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Seungwon Jeon authored and Chris Ball committed Oct 3, 2012
1 parent 4e78eac commit 4a4c815
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Showing 2 changed files with 3 additions and 14 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: f6ad0a481342223b2e7ae9f55b154e14f1391ada
refs/heads/master: 897b69e72054a39c1c1d99c8f334ffed6dc99ac4
15 changes: 2 additions & 13 deletions trunk/drivers/mmc/host/dw_mmc.c
Original file line number Diff line number Diff line change
Expand Up @@ -410,23 +410,11 @@ static void dw_mci_idmac_start_dma(struct dw_mci *host, unsigned int sg_len)
static int dw_mci_idmac_init(struct dw_mci *host)
{
struct idmac_desc *p;
int i, dma_support;
int i;

/* Number of descriptors in the ring buffer */
host->ring_size = PAGE_SIZE / sizeof(struct idmac_desc);

/* Check if Hardware Configuration Register has support for DMA */
dma_support = (mci_readl(host, HCON) >> 16) & 0x3;

if (!dma_support || dma_support > 2) {
dev_err(host->dev,
"Host Controller does not support IDMA Tx.\n");
host->dma_ops = NULL;
return -ENODEV;
}

dev_info(host->dev, "Using internal DMA controller.\n");

/* Forward link the descriptor list */
for (i = 0, p = host->sg_cpu; i < host->ring_size - 1; i++, p++)
p->des3 = host->sg_dma + (sizeof(struct idmac_desc) * (i + 1));
Expand Down Expand Up @@ -1985,6 +1973,7 @@ static void dw_mci_init_dma(struct dw_mci *host)
/* Determine which DMA interface to use */
#ifdef CONFIG_MMC_DW_IDMAC
host->dma_ops = &dw_mci_idmac_ops;
dev_info(&host->dev, "Using internal DMA controller.\n");
#endif

if (!host->dma_ops)
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