From: Zhangfei Gao <zhangfei.gao@linaro.org>
Date: Mon, 25 May 2015 02:46:54 +0000 (+0800)
Subject: mmc: dw_mmc: init desc in dw_mci_idmac_init
X-Git-Tag: firefly_0821_release~4120
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3c8fa1c0b79270a02920ee80a58572722109845f;p=firefly-linux-kernel-4.4.55.git

mmc: dw_mmc: init desc in dw_mci_idmac_init

Set 0 to des1 in 32bit case.
Otherwise the random value of des1 will be used in
dw_mci_translate_sglist: IDMAC_SET_BUFFER1_SIZE(desc, length)

Signed-off-by: Fei Wang <w.f@huawei.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
---

diff --git a/drivers/mmc/host/rk_sdmmc.c b/drivers/mmc/host/rk_sdmmc.c
index 45889f60b401..3a78760a01d8 100755
--- a/drivers/mmc/host/rk_sdmmc.c
+++ b/drivers/mmc/host/rk_sdmmc.c
@@ -593,9 +593,10 @@ static int dw_mci_idmac_init(struct dw_mci *host)
 	host->ring_size = PAGE_SIZE / sizeof(struct idmac_desc);
 
 	/* Forward link the descriptor list */
-	for (i = 0, p = host->sg_cpu; i < host->ring_size - 1; i++, p++)
+	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));
-
+		p->des1 = 0;
+	}
 	/* Set the last descriptor as the end-of-ring descriptor */
 	p->des3 = host->sg_dma;
 	p->des0 = IDMAC_DES0_ER;