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From: Christoph Hellwig <hch@lst.de>
To: Thomas Zimmermann <tzimmermann@suse.de>
Cc: hch@lst.de, Greg KH <gregkh@linuxfoundation.org>,
	Daniel Vetter <daniel@ffwll.ch>,
	David Airlie <airlied@redhat.com>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	USB list <linux-usb@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Regression: 6eb0233ec2d0 ("usb: don't inherity DMA properties for USB devices")
Date: Thu, 18 Feb 2021 16:07:46 +0100	[thread overview]
Message-ID: <20210218150746.GA18220@lst.de> (raw)
In-Reply-To: <ef15869a-fe87-aef2-591d-2ca909a66217@suse.de>

On Thu, Feb 18, 2021 at 03:56:00PM +0100, Thomas Zimmermann wrote:
> I only have udl devices, but I expect that other DRM USB adapters are also 
> affected.

Find where the driver calls dma_map_* itself instead of using the USB
wrappers and fix that..


  reply	other threads:[~2021-02-18 17:54 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-18 14:56 Regression: 6eb0233ec2d0 ("usb: don't inherity DMA properties for USB devices") Thomas Zimmermann
2021-02-18 14:56 ` Thomas Zimmermann
2021-02-18 15:07 ` Christoph Hellwig [this message]
2021-02-18 15:21   ` Thomas Zimmermann
2021-02-18 15:21     ` Thomas Zimmermann
2021-02-18 15:24     ` Christoph Hellwig

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