diff options
| author | Per Forlin <per.forlin@stericsson.com> | 2011-10-13 12:11:36 +0200 |
|---|---|---|
| committer | Philippe Langlais <philippe.langlais@stericsson.com> | 2012-05-22 11:02:55 +0200 |
| commit | ff4005a408d67e9b5a1aa781d2ca916ef763fe91 (patch) | |
| tree | 4f3685892d58659076b89e7f72189b9551842ba3 | |
| parent | 48d61af58c9c4257bb68425be44f1b40bed6c2a8 (diff) | |
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.
ST-Ericsson ID: 363565
ST-Ericsson FOSS-OUT ID: Trivial
ST-Ericsson Linux next: NA
Change-Id: I298b779db3d42944f2fcc9688fe519f640cca99d
Signed-off-by: Per Forlin <per.forlin@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34361
Reviewed-by: QATOOLS
Reviewed-by: QABUILD
Reviewed-by: Linus WALLEIJ <linus.walleij@stericsson.com>
| -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 751c876f373..6312131149c 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); |