From cec4c1c54a643608c262bd9bb72cf9bbec64f44a Mon Sep 17 00:00:00 2001 From: Michael Karcher Date: Thu, 19 Apr 2018 14:05:23 +1200 Subject: net-next: ax88796: add interrupt status callback to platform data To be able to tell the ax88796 driver whether it is sensible to enter the 8390 interrupt handler, an "is this interrupt caused by the 88796" callback has been added to the ax_plat_data structure (with NULL being compatible to the previous behaviour). Signed-off-by: Michael Karcher Signed-off-by: Michael Schmitz Signed-off-by: David S. Miller --- drivers/net/ethernet/8390/ax88796.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/8390/ax88796.c b/drivers/net/ethernet/8390/ax88796.c index 939a572a19ff..d283ed092519 100644 --- a/drivers/net/ethernet/8390/ax88796.c +++ b/drivers/net/ethernet/8390/ax88796.c @@ -163,6 +163,21 @@ static void ax_reset_8390(struct net_device *dev) ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ } +/* Wrapper for __ei_interrupt for platforms that have a platform-specific + * way to find out whether the interrupt request might be caused by + * the ax88796 chip. + */ +static irqreturn_t ax_ei_interrupt_filtered(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct ax_device *ax = to_ax_dev(dev); + struct platform_device *pdev = to_platform_device(dev->dev.parent); + + if (!ax->plat->check_irq(pdev)) + return IRQ_NONE; + + return ax_ei_interrupt(irq, dev_id); +} static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) @@ -482,8 +497,12 @@ static int ax_open(struct net_device *dev) if (ret) goto failed_mii; - ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, - dev->name, dev); + if (ax->plat->check_irq) + ret = request_irq(dev->irq, ax_ei_interrupt_filtered, + ax->irqflags, dev->name, dev); + else + ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags, + dev->name, dev); if (ret) goto failed_request_irq; -- cgit v1.2.3