mmc: Revert "mmc: dw_mmc: Add check for IDMAC configuration"

[profile/ivi/kernel-adaptation-intel-automotive.git] / drivers / mmc / host / dw_mmc.c

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 9f8e487..a23af77 100644 (file)
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -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));
@@ -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)