RE: [PATCH] usb: gadget: udc-core: remove manual dma configuration

From	Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Newsgroups	linux.kernel
Subject	RE: [PATCH] usb: gadget: udc-core: remove manual dma configuration
Date	2016-04-05 08:30 +0200
Message-ID	<rksEW-7oi-3@gated-at.bofh.it> (permalink)
References	<rkb1n-2kr-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi,

> From: Grygorii Strashko [mailto:grygorii.strashko@ti.com]
> Sent: Monday, April 04, 2016 8:32 PM
> 
> Since commit 7ace8fc8219e ("usb: gadget: udc: core: Fix argument of
> dma_map_single for IOMMU") it is not necessary to configure DMA for
> usb_gadget device manually, because all DMA operation are performed
> using parent/controller device.
> 
> Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

My environment could work correctly after I applied this patch.
So,

Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>


I realized that the commit 7ace8fc8219e is not suitable for my environment.
(Especially I realized it could use all of DMAC channels when IOMMU was enabled.)
So, I will submit RFC patch set for udc-core.c / renesas_usbhs later :)

Best regards,
Yoshihiro Shimoda

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[PATCH] usb: gadget: udc-core: remove manual dma configuration Grygorii Strashko <grygorii.strashko@ti.com> - 2016-04-04 13:40 +0200
  RE: [PATCH] usb: gadget: udc-core: remove manual dma configuration Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> - 2016-04-05 08:30 +0200

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