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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>
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1 changed files with 3 additions and 1 deletions
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@ -589,9 +589,11 @@ static int dw_mci_idmac_init(struct dw_mci *host)
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host->ring_size = PAGE_SIZE / sizeof(struct idmac_desc);
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/* Forward link the descriptor list */
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for (i = 0, p = host->sg_cpu; i < host->ring_size - 1; i++, p++)
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for (i = 0, p = host->sg_cpu; i < host->ring_size - 1; i++, p++) {
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p->des3 = cpu_to_le32(host->sg_dma +
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(sizeof(struct idmac_desc) * (i + 1)));
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p->des1 = 0;
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}
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/* Set the last descriptor as the end-of-ring descriptor */
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p->des3 = cpu_to_le32(host->sg_dma);
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