forked from luck/tmp_suning_uos_patched
mmc: omap: Initialize dma_slave_config to avoid random data in it's fields
It is wrong to use uninitialized dma_slave_config and configure only certain fields as the DMAengine driver might look at non initialized (random data) fields and tries to interpret it. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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@ -1016,14 +1016,16 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
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/* Only reconfigure if we have a different burst size */
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if (*bp != burst) {
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struct dma_slave_config cfg;
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cfg.src_addr = host->phys_base + OMAP_MMC_REG(host, DATA);
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cfg.dst_addr = host->phys_base + OMAP_MMC_REG(host, DATA);
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cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
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cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
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cfg.src_maxburst = burst;
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cfg.dst_maxburst = burst;
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struct dma_slave_config cfg = {
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.src_addr = host->phys_base +
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OMAP_MMC_REG(host, DATA),
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.dst_addr = host->phys_base +
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OMAP_MMC_REG(host, DATA),
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.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
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.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
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.src_maxburst = burst,
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.dst_maxburst = burst,
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};
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if (dmaengine_slave_config(c, &cfg))
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goto use_pio;
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