Commit 92bb6cdb authored Oct 13, 2011 by Per Forlin Committed by Fabio Baltieri Jan 14, 2013

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>

parent b96710e5

drivers/dma/ste_dma40.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -2578,6 +2578,14 @@ static int d40_set_runtime_config(struct dma_chan *chan,
		return -EINVAL;
		}

		if (src_maxburst > 16) {
		src_maxburst = 16;
		dst_maxburst = src_maxburst * src_addr_width / dst_addr_width;
		} else if (dst_maxburst > 16) {
		dst_maxburst = 16;
		src_maxburst = dst_maxburst * dst_addr_width / src_addr_width;
		}

		ret = dma40_config_to_halfchannel(d40c, &cfg->src_info,
		src_addr_width,
		src_maxburst);