netdev - [PATCH] net/enc28j60: low power mode

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

Date:	Thu, 14 Feb 2008 11:20:03 +0100
From:	Claudio Lanconelli <lanconelli.claudio@...ar.com>
To:	netdev@...r.kernel.org
CC:	Jeff Garzik <jgarzik@...ox.com>,
	David Brownell <david-b@...bell.net>
Subject: [PATCH] net/enc28j60: low power mode

Keep enc28j60 chips in low-power mode when they're not in use.
At typically 120 mA, these chips run hot even when idle; this
low power mode cuts that power usage by a factor of around 100.

This version provides a generic routine to poll a register until
its masked value equals some value ... e.g. bit set or cleared.
It's basically what the previous wait_phy_ready() did, but this
version is generalized to support the handshaking needed to
enter and exit low power mode.

Signed-off-by: David Brownell <dbrownell@...rs.sourceforge.net>
Signed-off-by: Claudio Lanconelli <lanconelli.claudio@...ar.com>

View attachment "enc28j60_lowpower.patch" of type "text/x-patch" (4623 bytes)