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authorLinus Walleij <linus.walleij@linaro.org>2013-12-14 00:16:23 +0100
committerVinod Koul <vinod.koul@intel.com>2013-12-18 21:58:30 +0530
commit1080411c6bf9da8e815292ccdb22f64662a38bb2 (patch)
tree811f66d4fd68015a01997753774843ac045fd176 /drivers/dma
parent0e772c672686460c5341fa2914c02c45c2b6a3f3 (diff)
downloadblackbird-op-linux-1080411c6bf9da8e815292ccdb22f64662a38bb2.tar.gz
blackbird-op-linux-1080411c6bf9da8e815292ccdb22f64662a38bb2.zip
dma: pl08x: allow zero slave channels
It might happen that a platform wants to use its DMA engine for memcpy only, and then we have zero slave channels to initialize, so allow the slave initialization to return zero. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/amba-pl08x.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index ec4ee5c1fe9d..f68f1c1d560b 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -2167,7 +2167,7 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id)
/* Register slave channels */
ret = pl08x_dma_init_virtual_channels(pl08x, &pl08x->slave,
pl08x->pd->num_slave_channels, true);
- if (ret <= 0) {
+ if (ret < 0) {
dev_warn(&pl08x->adev->dev,
"%s failed to enumerate slave channels - %d\n",
__func__, ret);
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