Commit 4b244724 authored by Zhangfei Gao's avatar Zhangfei Gao Committed by Ulf Hansson
Browse files

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: default avatarFei Wang <w.f@huawei.com>
Signed-off-by: default avatarZhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: default avatarJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 4e93b9a6

drivers/mmc/host/dw_mmc.c

+3 −1
Original line number Diff line number Diff line
@@ -589,9 +589,11 @@ 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 = cpu_to_le32(host->sg_dma +

					(sizeof(struct idmac_desc) * (i + 1)));

			p->des1 = 0;

		}



		/* Set the last descriptor as the end-of-ring descriptor */

		p->des3 = cpu_to_le32(host->sg_dma);

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