From 1080411c6bf9da8e815292ccdb22f64662a38bb2 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sat, 14 Dec 2013 00:16:23 +0100 Subject: [PATCH] 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 Signed-off-by: Vinod Koul --- drivers/dma/amba-pl08x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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); -- GitLab