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Message-ID: <1448891145-10766-2-git-send-email-peter.ujfalusi@ti.com>
Date: Mon, 30 Nov 2015 15:45:31 +0200
From: Peter Ujfalusi <peter.ujfalusi@...com>
To: <vinod.koul@...el.com>, <arnd@...db.de>,
<andy.shevchenko@...il.com>
CC: <linux-kernel@...r.kernel.org>, <dmaengine@...r.kernel.org>,
<linux-omap@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mmc@...r.kernel.org>, <nsekhar@...com>,
<linux-spi@...r.kernel.org>
Subject: [RFC v02 01/15] dmaengine: core: Allow NULL mask pointer in __dma_device_satisfies_mask()
Treat as true condition the case when the mask is NULL.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
drivers/dma/dmaengine.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index daf54a39bcc7..52c3eee48e2e 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -184,6 +184,9 @@ __dma_device_satisfies_mask(struct dma_device *device,
{
dma_cap_mask_t has;
+ if (!want)
+ return true;
+
bitmap_and(has.bits, want->bits, device->cap_mask.bits,
DMA_TX_TYPE_END);
return bitmap_equal(want->bits, has.bits, DMA_TX_TYPE_END);
--
2.6.3
--
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