From 06d51513129495fba9bb68ef7aa8cc5ca60e0556 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 11 Jul 2018 21:32:44 +0200 Subject: net: gemini: Move main init to port The initialization sequence for the ethernet, setting up interrupt routing and such things, need to be done after both the ports are clocked and reset. Before this the config will not "take". Move the initialization to the port probe function and keep track of init status in the state. Signed-off-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/ethernet/cortina/gemini.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'drivers/net/ethernet/cortina/gemini.c') diff --git a/drivers/net/ethernet/cortina/gemini.c b/drivers/net/ethernet/cortina/gemini.c index bd4602ebcea1..050fffb77d11 100644 --- a/drivers/net/ethernet/cortina/gemini.c +++ b/drivers/net/ethernet/cortina/gemini.c @@ -151,6 +151,7 @@ struct gemini_ethernet { void __iomem *base; struct gemini_ethernet_port *port0; struct gemini_ethernet_port *port1; + bool initialized; spinlock_t irq_lock; /* Locks IRQ-related registers */ unsigned int freeq_order; @@ -2303,6 +2304,14 @@ static void gemini_port_remove(struct gemini_ethernet_port *port) static void gemini_ethernet_init(struct gemini_ethernet *geth) { + /* Only do this once both ports are online */ + if (geth->initialized) + return; + if (geth->port0 && geth->port1) + geth->initialized = true; + else + return; + writel(0, geth->base + GLOBAL_INTERRUPT_ENABLE_0_REG); writel(0, geth->base + GLOBAL_INTERRUPT_ENABLE_1_REG); writel(0, geth->base + GLOBAL_INTERRUPT_ENABLE_2_REG); @@ -2450,6 +2459,10 @@ static int gemini_ethernet_port_probe(struct platform_device *pdev) geth->port0 = port; else geth->port1 = port; + + /* This will just be done once both ports are up and reset */ + gemini_ethernet_init(geth); + platform_set_drvdata(pdev, port); /* Set up and register the netdev */ @@ -2567,7 +2580,6 @@ static int gemini_ethernet_probe(struct platform_device *pdev) spin_lock_init(&geth->irq_lock); spin_lock_init(&geth->freeq_lock); - gemini_ethernet_init(geth); /* The children will use this */ platform_set_drvdata(pdev, geth); @@ -2580,8 +2592,8 @@ static int gemini_ethernet_remove(struct platform_device *pdev) { struct gemini_ethernet *geth = platform_get_drvdata(pdev); - gemini_ethernet_init(geth); geth_cleanup_freeq(geth); + geth->initialized = false; return 0; } -- cgit v1.2.3-59-g8ed1b