[PATCH 4/7] dmaengine: ste_dma40: limit burst size to 16
From: Per Forlin
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
Acked-by: Linus Walleij
Signed-off-by: Fabio Baltieri
---
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 16c96f5..0b80ee9 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2579,6 +2579,14 @@ 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, >src_info,
src_addr_width,
src_maxburst);
--
1.7.12.1
--
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[PATCH 4/7] dmaengine: ste_dma40: limit burst size to 16
From: Per Forlin per.for...@stericsson.com
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.for...@stericsson.com
Acked-by: Linus Walleij linus.wall...@linaro.org
Signed-off-by: Fabio Baltieri fabio.balti...@linaro.org
---
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 16c96f5..0b80ee9 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2579,6 +2579,14 @@ 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
--
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