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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <SG2PR06MB091981EC6C043B21262F3B0DD89E0@SG2PR06MB0919.apcprd06.prod.outlook.com>
Date:	Tue, 5 Apr 2016 06:27:18 +0000
From:	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To:	Grygorii Strashko <grygorii.strashko@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Felipe Balbi <balbi@...nel.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
CC:	Roger Quadros <rogerq@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	"nsekhar@...com" <nsekhar@...com>,
	Ruslan Bilovol <ruslan.bilovol@...il.com>
Subject: RE: [PATCH] usb: gadget: udc-core: remove manual dma configuration

Hi,

> From: Grygorii Strashko [mailto:grygorii.strashko@...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@...esas.com>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>

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

Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.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