linux-kernel - [PATCH v2 02/53] dmaengine: Make channel allocation callbacks optional

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Message-Id: <1413454672-27400-3-git-send-email-maxime.ripard@free-electrons.com>
Date:	Thu, 16 Oct 2014 12:17:01 +0200
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	dmaengine@...r.kernel.org, Vinod Koul <vinod.koul@...el.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Antoine Ténart <antoine@...e-electrons.com>,
	lars@...afoo.de, Russell King <linux@....linux.org.uk>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Dan Williams <dan.j.williams@...el.com>
Subject: [PATCH v2 02/53] dmaengine: Make channel allocation callbacks optional

Nowadays, some drivers don't have anything in there channel allocation
callbacks anymore.

Remove the BUG_ON if those callbacks aren't implemented, in order to allow
drivers to not implement them.

Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
---
 drivers/dma/dmaengine.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index d5d30ed863ce..cfcb181b1184 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -817,8 +817,6 @@ int dma_async_device_register(struct dma_device *device)
 	BUG_ON(dma_has_cap(DMA_INTERLEAVE, device->cap_mask) &&
 		!device->device_prep_interleaved_dma);
 
-	BUG_ON(!device->device_alloc_chan_resources);
-	BUG_ON(!device->device_free_chan_resources);
 	BUG_ON(!device->device_tx_status);
 	BUG_ON(!device->device_issue_pending);
 	BUG_ON(!device->dev);
-- 
2.1.1

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