From: Christoph Hellwig <hch@lst.de>
To: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>,
Tony Lindgren <tony@atomide.com>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
iommu@lists.linux-foundation.org, linux-omap@vger.kernel.org,
Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/4] ARM/dma-mapping: don't handle NULL devices in dma-direct.h
Date: Fri, 18 Sep 2020 07:10:30 +0200 [thread overview]
Message-ID: <20200918051030.GA21261@lst.de> (raw)
In-Reply-To: <20200917185009.GB1559@shell.armlinux.org.uk>
On Thu, Sep 17, 2020 at 07:50:10PM +0100, Russell King - ARM Linux admin wrote:
> On Thu, Sep 17, 2020 at 07:32:28PM +0200, Christoph Hellwig wrote:
> > The DMA API removed support for not passing in a device a long time
> > ago, so remove the NULL checks.
>
> What happens with ISA devices?
For actual drivers they've been switched to struct isa_driver, which
provides a struct device. For some of the special case like the
arch/arm/kernel/dma-isa.c we now use static struct device instances.
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next prev parent reply other threads:[~2020-09-18 5:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-17 17:32 RFC: remove the need for <asm/dma-direct.h> on ARM Christoph Hellwig
2020-09-17 17:32 ` [PATCH 1/4] ARM/omap1: switch to use dma_direct_set_offset for lbus DMA offsets Christoph Hellwig
2020-09-18 5:49 ` Tony Lindgren
2020-09-19 22:29 ` Janusz Krzysztofik
2020-09-21 6:44 ` Tony Lindgren
2020-09-21 6:47 ` Christoph Hellwig
2020-09-23 10:05 ` Russell King - ARM Linux admin
2020-09-25 4:16 ` Christoph Hellwig
2020-09-17 17:32 ` [PATCH 2/4] ARM/footbridge: " Christoph Hellwig
2020-09-17 18:53 ` Russell King - ARM Linux admin
2020-09-17 17:32 ` [PATCH 3/4] ARM/dma-mapping: don't handle NULL devices in dma-direct.h Christoph Hellwig
2020-09-17 18:50 ` Russell King - ARM Linux admin
2020-09-18 5:10 ` Christoph Hellwig [this message]
2020-09-17 17:32 ` [PATCH 4/4] ARM/dma-mapping: remove the arm specific phys to dma translation helpers Christoph Hellwig
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