From: Shawn Guo Date: Wed, 5 Jan 2011 21:13:12 +0000 (+0000) Subject: net/fec: improve pm for better suspend/resume X-Git-Tag: v2.6.38-rc1~403^2~59 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bcc67771ed8ee31cc1f2b1e033ae822b40c72ff9;p=pandora-kernel.git net/fec: improve pm for better suspend/resume The following commit made a fix to use fec_enet_open/fec_enet_close over fec_enet_init/fec_stop for suspend/resume, because fec_enet_init does not allow to have a working network interface at resume. e3fe8558c7fc182972c3d947d88744482111f304 net/fec: fix pm to survive to suspend/resume This fix works for i.mx/mxc fec controller, but fails on mx28 fec which gets a different interrupt logic design. On i.mx fec, interrupt can be triggered even bit ETHER_EN of ECR register is not set. But on mx28 fec, ETHER_EN must be set to get interrupt work. Meanwhile, MII interrupt is mandatory to resume the driver, because MDIO read/write changed to interrupt mode by commit below. 97b72e4320a9aaa4a7f1592ee7d2da7e2c9bd349 fec: use interrupt for MDIO completion indication fec_restart/fec_stop comes out as the solution working for both cases. Signed-off-by: Shawn Guo Signed-off-by: David S. Miller --- Reading git-diff-tree failed