From: Felipe Balbi <felipe.balbi@linux.intel.com>
To: Arnd Bergmann <arnd@arndb.de>, Tony Lindgren <tony@atomide.com>,
Aaro Koskinen <aaro.koskinen@iki.fi>,
Alan Stern <stern@rowland.harvard.edu>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Linus Walleij <linus.walleij@linaro.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Tomi Valkeinen <tomi.valkeinen@ti.com>,
Arnd Bergmann <arnd@arndb.de>,
Russell King <linux@armlinux.org.uk>,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: [PATCH 03/22] ARM: omap1: move omap15xx local bus handling to usb.c
Date: Fri, 09 Aug 2019 08:32:28 +0300 [thread overview]
Message-ID: <87y302ewer.fsf@gmail.com> (raw)
In-Reply-To: <20190808212234.2213262-4-arnd@arndb.de>
Arnd Bergmann <arnd@arndb.de> writes:
> The mach/memory.h file only exists to implement a dma offset for "Local
> Bus" devices, and that consists of the OHCI USB controller for practical
> purposes.
>
> The generic dma-mapping interface has gained this exact feature some
> years ago and can do it much more efficiently, so replace the complex
> __arch_virt_to_dma/__arch_dma_to_pfn/... logic with a much simpler boot
> time initialization.
>
> This should also make any code that performs dma mapping calls at
> runtime much more efficient, by eliminating the strcmp() along with
> the computation.
>
> Similar, a portion of the ohci-omap driver is just there for configuring
> the memory translation, this too can get moved into usb.c
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
For all of these patches related to usb:
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Thanks for cleaning this up, Arnd.
--
balbi
next prev parent reply other threads:[~2019-08-09 5:32 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190808212234.2213262-1-arnd@arndb.de>
2019-08-08 21:22 ` [PATCH 03/22] ARM: omap1: move omap15xx local bus handling to usb.c Arnd Bergmann
2019-08-09 5:32 ` Felipe Balbi [this message]
2019-08-10 10:28 ` Christoph Hellwig
2019-08-08 21:22 ` [PATCH 04/22] ARM: omap1: move ohci phy power handling to board files Arnd Bergmann
2019-08-08 21:22 ` [PATCH 05/22] ARM: omap1: move mach/usb.h to include/linux/soc Arnd Bergmann
2019-08-08 21:22 ` [PATCH 10/22] usb: omap: avoid mach/*.h headers Arnd Bergmann
2019-08-09 5:38 ` Greg Kroah-Hartman
2019-08-08 21:41 ` [PATCH 15/22] ARM: omap1: move mach/*.h into mach directory Arnd Bergmann
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