From: Per Forlin <[email protected]> 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 <[email protected]> Acked-by: Linus Walleij <[email protected]> Signed-off-by: Fabio Baltieri <[email protected]> --- drivers/dma/ste_dma40.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index f5724d9..2d0c63d 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -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); -- 1.7.12.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
