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dmaengine: ste_dma40: limit burst size to 16
The client is not aware of the maximum burst size in the dma driver. If the size exceeds 16 set max to 16. Signed-off-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
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@ -2578,6 +2578,14 @@ static int d40_set_runtime_config(struct dma_chan *chan,
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return -EINVAL;
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}
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if (src_maxburst > 16) {
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src_maxburst = 16;
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dst_maxburst = src_maxburst * src_addr_width / dst_addr_width;
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} else if (dst_maxburst > 16) {
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dst_maxburst = 16;
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src_maxburst = dst_maxburst * dst_addr_width / src_addr_width;
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}
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ret = dma40_config_to_halfchannel(d40c, &cfg->src_info,
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src_addr_width,
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src_maxburst);
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