diff options
| -rw-r--r-- | drivers/mmc/host/mtk-sd.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index c877dedf23d2..385816375614 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1145,11 +1145,14 @@ static void msdc_init_gpd_bd(struct msdc_host *host, struct msdc_dma *dma) struct mt_bdma_desc *bd = dma->bd; int i; - memset(gpd, 0, sizeof(struct mt_gpdma_desc)); + memset(gpd, 0, sizeof(struct mt_gpdma_desc) * 2); gpd->gpd_info = GPDMA_DESC_BDP; /* hwo, cs, bd pointer */ gpd->ptr = (u32)dma->bd_addr; /* physical address */ - + /* gpd->next is must set for desc DMA + * That's why must alloc 2 gpd structure. + */ + gpd->next = (u32)dma->gpd_addr + sizeof(struct mt_gpdma_desc); memset(bd, 0, sizeof(struct mt_bdma_desc) * MAX_BD_NUM); for (i = 0; i < (MAX_BD_NUM - 1); i++) bd[i].next = (u32)dma->bd_addr + sizeof(*bd) * (i + 1); @@ -1306,7 +1309,7 @@ static int msdc_drv_probe(struct platform_device *pdev) host->timeout_clks = 3 * 1048576; host->dma.gpd = dma_alloc_coherent(&pdev->dev, - sizeof(struct mt_gpdma_desc), + 2 * sizeof(struct mt_gpdma_desc), &host->dma.gpd_addr, GFP_KERNEL); host->dma.bd = dma_alloc_coherent(&pdev->dev, MAX_BD_NUM * sizeof(struct mt_bdma_desc), @@ -1347,7 +1350,7 @@ release: release_mem: if (host->dma.gpd) dma_free_coherent(&pdev->dev, - sizeof(struct mt_gpdma_desc), + 2 * sizeof(struct mt_gpdma_desc), host->dma.gpd, host->dma.gpd_addr); if (host->dma.bd) dma_free_coherent(&pdev->dev, |