| 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
| ||
|
Date: Wed, 31 Aug 2011 17:31:29 +0100 From: Mark Brown <broonie@...nsource.wolfsonmicro.com> To: Arnd Bergmann <arnd@...db.de> Cc: Stephen Warren <swarren@...dia.com>, Ben Dooks <ben-linux@...ff.org>, Dilan Lee <dilee@...dia.com>, "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>, "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Colin Cross <ccross@...gle.com> Subject: Re: [PATCH] i2c/tegra: I2C driver uses the suspend_noirq/resume_noirq On Wed, Aug 31, 2011 at 06:28:40PM +0200, Arnd Bergmann wrote: > Sorry, I normally like to give my opinion on everything, but I really don't > have a clue what this one is about. I don't understand i2c or power management ;-) The issue is that due to our sequencing suspend and resume using the control heirachy rather than dependencies we attempt to suspend the I2C controller prior to some devices that need it. As we don't have a good solution for this at the minute where it's an issue we've been avoiding it by using the _noirq() suspend and resume functions for the controller to reorder their suspend with respect to the rest of the system. It's not great but practically speaking it works. -- 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/
Powered by blists - more mailing lists