From 8481085a83af02397ed0bf29c2bce517c9287f32 Mon Sep 17 00:00:00 2001 From: Mark Einon Date: Sat, 1 Oct 2011 11:14:17 +0100 Subject: [PATCH] staging: et131x: Fix indefinite low power sleep The mechanism by which the device is put into low power sleep is broken in that the device can never come back out of low power mode afterwards. Temorary fix to bring the device back out of sleep almost immediately, until a suitable wake trigger can be found. Signed-off-by: Mark Einon Signed-off-by: Greg Kroah-Hartman --- drivers/staging/et131x/et1310_pm.c | 5 +++-- drivers/staging/et131x/et131x_initpci.c | 12 +++++++++--- 2 files changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/staging/et131x/et1310_pm.c b/drivers/staging/et131x/et1310_pm.c index fd1eb6f32966..a1b72bf84677 100644 --- a/drivers/staging/et131x/et1310_pm.c +++ b/drivers/staging/et131x/et1310_pm.c @@ -147,6 +147,8 @@ void et1310_enable_phy_coma(struct et131x_adapter *adapter) /* Wait for outstanding Receive packets */ + et131x_disable_txrx(adapter->netdev); + /* Gate off JAGCore 3 clock domains */ pmcsr &= ~ET_PMCSR_INIT; writel(pmcsr, &adapter->regs->global.pm_csr); @@ -198,7 +200,6 @@ void et1310_disable_phy_coma(struct et131x_adapter *adapter) /* Allow Tx to restart */ adapter->flags &= ~fMP_ADAPTER_LOWER_POWER; - /* Need to re-enable Rx. */ - et131x_rx_dma_enable(adapter); + et131x_enable_txrx(adapter->netdev); } diff --git a/drivers/staging/et131x/et131x_initpci.c b/drivers/staging/et131x/et131x_initpci.c index ed2261548d38..9795310fa71e 100644 --- a/drivers/staging/et131x/et131x_initpci.c +++ b/drivers/staging/et131x/et131x_initpci.c @@ -243,10 +243,15 @@ void et131x_error_timer_handler(unsigned long data) struct et131x_adapter *adapter = (struct et131x_adapter *) data; struct phy_device *phydev = adapter->phydev; - if (!et1310_in_phy_coma(adapter)) + if (et1310_in_phy_coma(adapter)) { + /* Bring the device immediately out of coma, to + * prevent it from sleeping indefinitely, this + * mechanism could be improved! */ + et1310_disable_phy_coma(adapter); + adapter->boot_coma = 20; + } else { et1310_update_macstat_host_counters(adapter); - else - dev_err(&adapter->pdev->dev, "No interrupts, in PHY coma\n"); + } if (!phydev->link && adapter->boot_coma < 11) adapter->boot_coma++; @@ -495,6 +500,7 @@ static void et131x_adjust_link(struct net_device *netdev) } else { dev_warn(&adapter->pdev->dev, "Link down - cable problem ?\n"); + adapter->boot_coma = 0; if (phydev && phydev->speed == SPEED_10) { /* NOTE - Is there a way to query this without -- 2.20.1