Bugzilla: 1012025
Upstream-status: An initial work around for the cpsw driver issue trying to access HW registers
with clock disabled. Upstream is working on a proper fix with the hope to land it in 3.13.

--- linux-3.12.4-1.fc20.x86_64/drivers/net/ethernet/ti/cpsw.c.orig	2013-12-11 20:52:41.576478796 +0000
+++ linux-3.12.4-1.fc20.x86_64/drivers/net/ethernet/ti/cpsw.c	2013-12-11 20:55:14.418692261 +0000
@@ -2001,6 +2001,8 @@
 		goto clean_cpsw_iores_ret;
 	}
 	priv->regs = ss_regs;
+
+	pm_runtime_get_sync(&pdev->dev);
 	priv->version = __raw_readl(&priv->regs->id_ver);
 	priv->host_port = HOST_PORT_NUM;
 
@@ -2161,6 +2163,7 @@
 			goto clean_irq_ret;
 		}
 	}
+	pm_runtime_put_sync(&pdev->dev);
 
 	return 0;