From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Maxime Chevallier <maxime.chevallier@bootlin.com>,
Gavin Li <git@thegavinli.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
Minas Harutyunyan <hminas@synopsys.com>,
Alan Stern <stern@rowland.harvard.edu>,
Geoff Levand <geoff@infradead.org>,
Michal Simek <michal.simek@xilinx.com>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
Mathias Nyman <mathias.nyman@intel.com>, Bin Liu <b-liu@ti.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
USB list <linux-usb@vger.kernel.org>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
linux-m68k <linux-m68k@lists.linux-m68k.org>,
Linux IOMMU <iommu@lists.linux-foundation.org>,
Linux-Arch <linux-arch@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 6/6] driver core: initialize a default DMA mask for platform device
Date: Fri, 16 Aug 2019 09:39:03 +0200 [thread overview]
Message-ID: <CAMuHMdVj+4Kh6pRGrz32w4zgwGHH4-r+-iHX1CSAXU6t4sprJw@mail.gmail.com> (raw)
In-Reply-To: <20190816062435.881-7-hch@lst.de>
Hi Christoph,
On Fri, Aug 16, 2019 at 8:30 AM Christoph Hellwig <hch@lst.de> wrote:
> We still treat devices without a DMA mask as defaulting to 32-bits for
> both mask, but a few releases ago we've started warning about such
> cases, as they require special cases to work around this sloppyness.
> Add a dma_mask field to struct platform_device so that we can initialize
> the dma_mask pointer in struct device and initialize both masks to
> 32-bits by default, replacing similar functionality in m68k and
> powerpc. The arch_setup_pdev_archdata hooks is now unused and removed.
>
> Note that the code looks a little odd with the various conditionals
> because we have to support platform_device structures that are
> statically allocated.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> arch/m68k/kernel/dma.c | 9 -------
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
> arch/sh/boards/mach-ecovec24/setup.c | 2 --
> arch/sh/boards/mach-migor/setup.c | 1 -
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
given "[PATCH 0/2] Remove calls to empty arch_setup_pdev_archdata()"
https://lore.kernel.org/linux-renesas-soc/1526641611-2769-1-git-send-email-geert+renesas@glider.be/
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next prev parent reply other threads:[~2019-08-16 7:39 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-16 6:24 next take at setting up a dma mask by default for platform devices v2 Christoph Hellwig
2019-08-16 6:24 ` [PATCH 1/6] usb: don't create dma pools for HCDs with a localmem_pool Christoph Hellwig
2019-08-16 6:24 ` [PATCH 2/6] usb: add a hcd_uses_dma helper Christoph Hellwig
2019-08-16 6:24 ` [PATCH 3/6] usb: add a HCD_DMA flag instead of guestimating DMA capabilities Christoph Hellwig
2019-08-16 6:24 ` [PATCH 4/6] usb/max3421: remove the dummy {un,}map_urb_for_dma methods Christoph Hellwig
2019-08-16 6:24 ` [PATCH 5/6] dma-mapping: remove is_device_dma_capable Christoph Hellwig
2019-08-16 6:24 ` [PATCH 6/6] driver core: initialize a default DMA mask for platform device Christoph Hellwig
2019-08-16 7:39 ` Geert Uytterhoeven [this message]
2019-08-22 17:11 ` next take at setting up a dma mask by default for platform devices v2 Greg Kroah-Hartman
-- strict thread matches above, loose matches on Subject: below --
2019-08-11 8:05 next take at setting up a dma mask by default for platform devices Christoph Hellwig
2019-08-11 8:05 ` [PATCH 6/6] driver core: initialize a default DMA mask for platform device Christoph Hellwig
2019-08-14 15:49 ` Robin Murphy
2019-08-15 13:32 ` Christoph Hellwig
2019-08-15 13:03 ` Greg Kroah-Hartman
2019-08-15 13:38 ` Christoph Hellwig
2019-08-15 14:05 ` Greg Kroah-Hartman
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