diff options
| author | Per Forlin <per.forlin@stericsson.com> | 2011-10-13 12:11:36 +0200 |
|---|---|---|
| committer | Fabio Baltieri <fabio.baltieri@linaro.org> | 2013-01-14 10:50:27 +0100 |
| commit | 92bb6cdb5302a4b0b3c6b6cfc0854aaed882c4bc (patch) | |
| tree | cad01bad6f27e959d94e8261499fb72fb9544173 /drivers/dma | |
| parent | dmaengine: ste_dma40: set dma max seg size (diff) | |
| download | linux-92bb6cdb5302a4b0b3c6b6cfc0854aaed882c4bc.tar.xz linux-92bb6cdb5302a4b0b3c6b6cfc0854aaed882c4bc.zip | |
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>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/ste_dma40.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index f5724d95ed48..2d0c63dcd84c 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); |