From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Ujfalusi Subject: [RFC v02 01/15] dmaengine: core: Allow NULL mask pointer in __dma_device_satisfies_mask() Date: Mon, 30 Nov 2015 15:45:31 +0200 Message-ID: <1448891145-10766-2-git-send-email-peter.ujfalusi@ti.com> References: <1448891145-10766-1-git-send-email-peter.ujfalusi@ti.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , , , , , To: , , Return-path: In-Reply-To: <1448891145-10766-1-git-send-email-peter.ujfalusi@ti.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org Treat as true condition the case when the mask is NULL. Signed-off-by: Peter Ujfalusi --- 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