[PATCH] fixup! mci: sdhci: Force DMA update to the next block boundary

[Jules Maselbas]

straight copy from Linux didn't worked because the macro SDHCI_DMA_BOUNDARY_512K
(default value of sdhci::sdma_boundary) is not a size but the enum value to be
written in the transfer control register.

Signed-off-by: Jules Maselbas <jmaselbas at kalray.eu>
---
 drivers/mci/sdhci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mci/sdhci.c b/drivers/mci/sdhci.c
index 4c8e73d94d..b0b83bfaa9 100644
--- a/drivers/mci/sdhci.c
+++ b/drivers/mci/sdhci.c
@@ -289,8 +289,10 @@ int sdhci_transfer_data_dma(struct sdhci *sdhci, struct mci_data *data,
 		 * some controllers are faulty, don't trust them.
 		 */
 		if (irqstat & SDHCI_INT_DMA) {
+			int boundary_cfg = (sdhci->sdma_boundary >> 12) & 0x7;
+			dma_addr_t boundary_size = 4096 << boundary_cfg;
 			/* Force update to the next DMA block boundary. */
-			dma += sdhci->sdma_boundary;
+			dma = (dma & ~(boundary_size - 1)) + boundary_size;
 
 			/*
 			 * DMA engine has stopped on buffer boundary. Acknowledge
-- 
2.17.1