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From: Christoph Hellwig <hch@lst.de>
To: Arnd Bergmann <arnd@kernel.org>
Cc: Andrew Lunn <andrew@lunn.ch>,
	Gregory Clement <gregory.clement@bootlin.com>,
	Andre Przywara <andre.przywara@arm.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	USB list <linux-usb@vger.kernel.org>,
	Russell King <linux@armlinux.org.uk>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"open list:IOMMU DRIVERS" <iommu@lists.linux-foundation.org>,
	Alan Stern <stern@rowland.harvard.edu>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Robin Murphy <robin.murphy@arm.com>,
	Christoph Hellwig <hch@lst.de>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Subject: Re: [PATCH 4/7] ARM: remove the unused virt_to_dma helper
Date: Thu, 21 Apr 2022 16:11:08 +0200	[thread overview]
Message-ID: <20220421141108.GA20492@lst.de> (raw)
In-Reply-To: <CAK8P3a2zSZsiq_FFHJMHex6uLc_7sUfvns8W8-mE52yzxOqhKw@mail.gmail.com>

On Thu, Apr 21, 2022 at 10:00:55AM +0200, Arnd Bergmann wrote:
> I think __virt_to_bus() is now unused as well and could be removed
> in the same step.

Yes.

> It looks like __bus_to_virt() is still used in the ISA DMA API, but
> as that is only used on footbridge and rpc, the generic version of
> that could be moved into rpc (footbridge already has a custom
> version).

That sounds like a useful cleanup, but isn't really in scope for
this series.
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Arnd Bergmann <arnd@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>,
	Russell King <linux@armlinux.org.uk>,
	Linus Walleij <linus.walleij@linaro.org>,
	Andre Przywara <andre.przywara@arm.com>,
	Andrew Lunn <andrew@lunn.ch>,
	Gregory Clement <gregory.clement@bootlin.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Alan Stern <stern@rowland.harvard.edu>,
	Laurentiu Tudor <laurentiu.tudor@nxp.com>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	Robin Murphy <robin.murphy@arm.com>,
	"open list:IOMMU DRIVERS" <iommu@lists.linux-foundation.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	USB list <linux-usb@vger.kernel.org>
Subject: Re: [PATCH 4/7] ARM: remove the unused virt_to_dma helper
Date: Thu, 21 Apr 2022 16:11:08 +0200	[thread overview]
Message-ID: <20220421141108.GA20492@lst.de> (raw)
In-Reply-To: <CAK8P3a2zSZsiq_FFHJMHex6uLc_7sUfvns8W8-mE52yzxOqhKw@mail.gmail.com>

On Thu, Apr 21, 2022 at 10:00:55AM +0200, Arnd Bergmann wrote:
> I think __virt_to_bus() is now unused as well and could be removed
> in the same step.

Yes.

> It looks like __bus_to_virt() is still used in the ISA DMA API, but
> as that is only used on footbridge and rpc, the generic version of
> that could be moved into rpc (footbridge already has a custom
> version).

That sounds like a useful cleanup, but isn't really in scope for
this series.

WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Arnd Bergmann <arnd@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>,
	Russell King <linux@armlinux.org.uk>,
	Linus Walleij <linus.walleij@linaro.org>,
	Andre Przywara <andre.przywara@arm.com>,
	Andrew Lunn <andrew@lunn.ch>,
	Gregory Clement <gregory.clement@bootlin.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Alan Stern <stern@rowland.harvard.edu>,
	Laurentiu Tudor <laurentiu.tudor@nxp.com>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	Robin Murphy <robin.murphy@arm.com>,
	"open list:IOMMU DRIVERS" <iommu@lists.linux-foundation.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	USB list <linux-usb@vger.kernel.org>
Subject: Re: [PATCH 4/7] ARM: remove the unused virt_to_dma helper
Date: Thu, 21 Apr 2022 16:11:08 +0200	[thread overview]
Message-ID: <20220421141108.GA20492@lst.de> (raw)
In-Reply-To: <CAK8P3a2zSZsiq_FFHJMHex6uLc_7sUfvns8W8-mE52yzxOqhKw@mail.gmail.com>

On Thu, Apr 21, 2022 at 10:00:55AM +0200, Arnd Bergmann wrote:
> I think __virt_to_bus() is now unused as well and could be removed
> in the same step.

Yes.

> It looks like __bus_to_virt() is still used in the ISA DMA API, but
> as that is only used on footbridge and rpc, the generic version of
> that could be moved into rpc (footbridge already has a custom
> version).

That sounds like a useful cleanup, but isn't really in scope for
this series.

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2022-04-21 14:11 UTC|newest]

Thread overview: 75+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-21  7:41 fully convert arm to use dma-direct Christoph Hellwig
2022-04-21  7:41 ` Christoph Hellwig
2022-04-21  7:41 ` Christoph Hellwig
2022-04-21  7:41 ` [PATCH 1/7] ARM: sa1100/assabet: move dmabounce hack to ohci driver Christoph Hellwig
2022-04-21  7:41   ` Christoph Hellwig
2022-04-21  7:41   ` Christoph Hellwig
2022-04-21  7:41 ` [PATCH 2/7] ARM: remove dmabounce Christoph Hellwig
2022-04-21  7:41   ` Christoph Hellwig
2022-04-21  7:41   ` Christoph Hellwig
2022-04-21  7:48   ` Arnd Bergmann
2022-04-21  7:48     ` Arnd Bergmann
2022-04-21  7:48     ` Arnd Bergmann
2022-04-21  7:42 ` [PATCH 3/7] ARM: mark various dma-mapping routines static in dma-mapping.c Christoph Hellwig
2022-04-21  7:42   ` Christoph Hellwig
2022-04-21  7:42   ` Christoph Hellwig
2022-04-21  7:49   ` Arnd Bergmann
2022-04-21  7:49     ` Arnd Bergmann
2022-04-21  7:49     ` Arnd Bergmann
2022-04-21  7:42 ` [PATCH 4/7] ARM: remove the unused virt_to_dma helper Christoph Hellwig
2022-04-21  7:42   ` Christoph Hellwig
2022-04-21  7:42   ` Christoph Hellwig
2022-04-21  8:00   ` Arnd Bergmann
2022-04-21  8:00     ` Arnd Bergmann
2022-04-21  8:00     ` Arnd Bergmann
2022-04-21 14:11     ` Christoph Hellwig [this message]
2022-04-21 14:11       ` Christoph Hellwig
2022-04-21 14:11       ` Christoph Hellwig
2022-04-21  7:42 ` [PATCH 5/7] ARM: use dma_to_phys/phys_to_dma in the dma-mapping code Christoph Hellwig
2022-04-21  7:42   ` Christoph Hellwig
2022-04-21  7:42   ` Christoph Hellwig
2022-04-21  8:02   ` Arnd Bergmann
2022-04-21  8:02     ` Arnd Bergmann
2022-04-21  8:02     ` Arnd Bergmann
2022-04-21  7:42 ` [PATCH 6/7] ARM: use the common dma_to_phys/phys_to_dma implementation where possible Christoph Hellwig
2022-04-21  7:42   ` Christoph Hellwig
2022-04-21  7:42   ` Christoph Hellwig
2022-04-21  8:05   ` Arnd Bergmann
2022-04-21  8:05     ` Arnd Bergmann
2022-04-21  8:05     ` Arnd Bergmann
2022-04-21 14:12     ` Christoph Hellwig
2022-04-21 14:12       ` Christoph Hellwig
2022-04-21 14:12       ` Christoph Hellwig
2022-04-21  7:42 ` [PATCH 7/7] ARM: use dma-direct unconditionally Christoph Hellwig
2022-04-21  7:42   ` Christoph Hellwig
2022-04-21  7:42   ` Christoph Hellwig
2022-04-21  8:09   ` Arnd Bergmann
2022-04-21  8:09     ` Arnd Bergmann
2022-04-21  8:09     ` Arnd Bergmann
2022-04-21  8:14 ` fully convert arm to use dma-direct Arnd Bergmann
2022-04-21  8:14   ` Arnd Bergmann
2022-04-21  8:14   ` Arnd Bergmann
2022-04-21 10:41 ` Andre Przywara
2022-04-21 10:41   ` Andre Przywara
2022-04-21 10:41   ` Andre Przywara
2022-04-22 21:17 ` Linus Walleij
2022-04-22 21:17   ` Linus Walleij
2022-04-22 21:17   ` Linus Walleij
2022-04-23 10:27   ` Marc Zyngier
2022-04-23 10:27     ` Marc Zyngier
2022-04-23 10:27     ` Marc Zyngier
2022-04-23 16:43     ` Christoph Hellwig
2022-04-23 16:43       ` Christoph Hellwig
2022-04-23 16:43       ` Christoph Hellwig
2022-05-06 12:06   ` Marc Zyngier
2022-05-06 12:06     ` Marc Zyngier
2022-05-06 12:06     ` Marc Zyngier
2022-05-09  6:16     ` Christoph Hellwig
2022-05-09  6:16       ` Christoph Hellwig
2022-05-09  6:16       ` Christoph Hellwig
2022-05-09 15:44   ` Russell King (Oracle)
2022-05-09 15:44     ` Russell King (Oracle)
2022-05-09 15:44     ` Russell King (Oracle)
2022-05-09 21:51     ` Linus Walleij
2022-05-09 21:51       ` Linus Walleij
2022-05-09 21:51       ` Linus Walleij

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