linux-kernel - Re: [PATCH] spi: slink-tegra20: move runtime pm calls to transfer_one

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

Message-ID: <513A1A58.9060102@wwwdotorg.org>
Date:	Fri, 08 Mar 2013 10:05:28 -0700
From:	Stephen Warren <swarren@...dotorg.org>
To:	Laxman Dewangan <ldewangan@...dia.com>
CC:	grant.likely@...retlab.ca, broonie@...nsource.wolfsonmicro.com,
	spi-devel-general@...ts.sourceforge.net,
	linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi: slink-tegra20: move runtime pm calls to transfer_one_message

On 03/07/2013 11:21 PM, Laxman Dewangan wrote:
> The prepare_transfer_hardware() is called in atomic context and
> calling synchronous runtime pm calls can create scheduling deadlock.
> 
> Therefore, in place of calling runtime PM calls from prepare/unprepare
> message transfer, calling this in transfer_one_message().

Tested-by: Stephen Warren <swarren@...dia.com>

This does fix some slightly intermittent lockups/crashes for me when
erasing and re-writing the SPI flash on Cardhu.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/