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From: Christoph Hellwig <hch@lst.de>
To: Richard Weinberger <richard@nod.at>
Cc: linux-kernel@vger.kernel.org, sumit.semwal@linaro.org,
	iommu@lists.linux-foundation.org, robin.murphy@arm.com,
	hch@lst.de, dan.carpenter@oracle.com
Subject: Re: Passing NULL dev to dma_alloc_coherent() allowed or not?
Date: Sun, 28 Jun 2020 09:10:14 +0200	[thread overview]
Message-ID: <20200628071014.GA16213@lst.de> (raw)
In-Reply-To: <1669515915.65540.1593258316061.JavaMail.zimbra@nod.at>

You can't pass NULL.  The synclink case is dead code as we stopped
supporting non-PCI adapters a while ago.  I had a patch to remove
the !PCI code a while ago, but it seems like it never made it upstream.

The staging code is, well .. staging code.
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WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Richard Weinberger <richard@nod.at>
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	sumit.semwal@linaro.org, robin.murphy@arm.com,
	m.szyprowski@samsung.com, hch@lst.de, dan.carpenter@oracle.com
Subject: Re: Passing NULL dev to dma_alloc_coherent() allowed or not?
Date: Sun, 28 Jun 2020 09:10:14 +0200	[thread overview]
Message-ID: <20200628071014.GA16213@lst.de> (raw)
In-Reply-To: <1669515915.65540.1593258316061.JavaMail.zimbra@nod.at>

You can't pass NULL.  The synclink case is dead code as we stopped
supporting non-PCI adapters a while ago.  I had a patch to remove
the !PCI code a while ago, but it seems like it never made it upstream.

The staging code is, well .. staging code.

  parent reply	other threads:[~2020-06-28  7:10 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-27 11:45 Passing NULL dev to dma_alloc_coherent() allowed or not? Richard Weinberger
2020-06-27 11:45 ` Richard Weinberger
2020-06-27 13:09 ` Dan Carpenter
2020-06-27 13:09   ` Dan Carpenter
2020-06-28  7:10 ` Christoph Hellwig [this message]
2020-06-28  7:10   ` Christoph Hellwig

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