--- old/drivers/net/forcedeth.c 2009-03-05 10:45:40.000000000 -0800 +++ new/drivers/net/forcedeth.c 2009-03-05 10:45:56.000000000 -0800 @@ -3423,99 +3423,78 @@ struct net_device *dev = (struct net_device *) data; struct fe_priv *np = netdev_priv(dev); u8 __iomem *base = get_hwbase(dev); - int i; dprintk(KERN_DEBUG "%s: nv_nic_irq\n", dev->name); - for (i=0; ; i++) { - if (!(np->msi_flags & NV_MSI_X_ENABLED)) { - np->events = readl(base + NvRegIrqStatus); - writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus); - } else { - np->events = readl(base + NvRegMSIXIrqStatus); - writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus); - } - dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events); - if (!(np->events & np->irqmask)) - break; + if (!(np->msi_flags & NV_MSI_X_ENABLED)) { + np->events = readl(base + NvRegIrqStatus); + writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus); + } else { + np->events = readl(base + NvRegMSIXIrqStatus); + writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus); + } + dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events); + if (!(np->events & np->irqmask)) + return IRQ_NONE; - nv_msi_workaround(np); + nv_msi_workaround(np); #ifdef CONFIG_FORCEDETH_NAPI - spin_lock(&np->lock); - napi_schedule(&np->napi); + spin_lock(&np->lock); + napi_schedule(&np->napi); - /* Disable furthur irq's - (msix not enabled with napi) */ - writel(0, base + NvRegIrqMask); + /* Disable furthur irq's + (msix not enabled with napi) */ + writel(0, base + NvRegIrqMask); - spin_unlock(&np->lock); + spin_unlock(&np->lock); - return IRQ_HANDLED; + return IRQ_HANDLED; #else - spin_lock(&np->lock); - nv_tx_done(dev, np->tx_ring_size); - spin_unlock(&np->lock); - - if (nv_rx_process(dev, RX_WORK_PER_LOOP)) { - if (unlikely(nv_alloc_rx(dev))) { - spin_lock(&np->lock); - if (!np->in_shutdown) - mod_timer(&np->oom_kick, jiffies + OOM_REFILL); - spin_unlock(&np->lock); - } - } + spin_lock(&np->lock); + nv_tx_done(dev, np->tx_ring_size); + spin_unlock(&np->lock); - if (unlikely(np->events & NVREG_IRQ_LINK)) { - spin_lock(&np->lock); - nv_link_irq(dev); - spin_unlock(&np->lock); - } - if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) { + if (nv_rx_process(dev, RX_WORK_PER_LOOP)) { + if (unlikely(nv_alloc_rx(dev))) { spin_lock(&np->lock); - nv_linkchange(dev); + if (!np->in_shutdown) + mod_timer(&np->oom_kick, jiffies + OOM_REFILL); spin_unlock(&np->lock); - np->link_timeout = jiffies + LINK_TIMEOUT; } - if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) { - spin_lock(&np->lock); - /* disable interrupts on the nic */ - if (!(np->msi_flags & NV_MSI_X_ENABLED)) - writel(0, base + NvRegIrqMask); - else - writel(np->irqmask, base + NvRegIrqMask); - pci_push(base); + } - if (!np->in_shutdown) { - np->nic_poll_irq = np->irqmask; - np->recover_error = 1; - mod_timer(&np->nic_poll, jiffies + POLL_WAIT); - } - spin_unlock(&np->lock); - break; - } - if (unlikely(i > max_interrupt_work)) { - spin_lock(&np->lock); - /* disable interrupts on the nic */ - if (!(np->msi_flags & NV_MSI_X_ENABLED)) - writel(0, base + NvRegIrqMask); - else - writel(np->irqmask, base + NvRegIrqMask); - pci_push(base); + if (unlikely(np->events & NVREG_IRQ_LINK)) { + spin_lock(&np->lock); + nv_link_irq(dev); + spin_unlock(&np->lock); + } + if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) { + spin_lock(&np->lock); + nv_linkchange(dev); + spin_unlock(&np->lock); + np->link_timeout = jiffies + LINK_TIMEOUT; + } + if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) { + spin_lock(&np->lock); + /* disable interrupts on the nic */ + if (!(np->msi_flags & NV_MSI_X_ENABLED)) + writel(0, base + NvRegIrqMask); + else + writel(np->irqmask, base + NvRegIrqMask); + pci_push(base); - if (!np->in_shutdown) { - np->nic_poll_irq = np->irqmask; - mod_timer(&np->nic_poll, jiffies + POLL_WAIT); - } - spin_unlock(&np->lock); - printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i); - break; + if (!np->in_shutdown) { + np->nic_poll_irq = np->irqmask; + np->recover_error = 1; + mod_timer(&np->nic_poll, jiffies + POLL_WAIT); } -#endif + spin_unlock(&np->lock); } +#endif dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name); - return IRQ_RETVAL(i); + return IRQ_HANDLED; } /** @@ -3528,100 +3507,79 @@ struct net_device *dev = (struct net_device *) data; struct fe_priv *np = netdev_priv(dev); u8 __iomem *base = get_hwbase(dev); - int i; dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized\n", dev->name); - for (i=0; ; i++) { - if (!(np->msi_flags & NV_MSI_X_ENABLED)) { - np->events = readl(base + NvRegIrqStatus); - writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus); - } else { - np->events = readl(base + NvRegMSIXIrqStatus); - writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus); - } - dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events); - if (!(np->events & np->irqmask)) - break; + if (!(np->msi_flags & NV_MSI_X_ENABLED)) { + np->events = readl(base + NvRegIrqStatus); + writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus); + } else { + np->events = readl(base + NvRegMSIXIrqStatus); + writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus); + } + dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events); + if (!(np->events & np->irqmask)) + return IRQ_NONE; - nv_msi_workaround(np); + nv_msi_workaround(np); #ifdef CONFIG_FORCEDETH_NAPI - spin_lock(&np->lock); - napi_schedule(&np->napi); + spin_lock(&np->lock); + napi_schedule(&np->napi); - /* Disable furthur irq's - (msix not enabled with napi) */ - writel(0, base + NvRegIrqMask); + /* Disable furthur irq's + (msix not enabled with napi) */ + writel(0, base + NvRegIrqMask); - spin_unlock(&np->lock); + spin_unlock(&np->lock); - return IRQ_HANDLED; + return IRQ_HANDLED; #else - spin_lock(&np->lock); - nv_tx_done_optimized(dev, TX_WORK_PER_LOOP); - spin_unlock(&np->lock); - - if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) { - if (unlikely(nv_alloc_rx_optimized(dev))) { - spin_lock(&np->lock); - if (!np->in_shutdown) - mod_timer(&np->oom_kick, jiffies + OOM_REFILL); - spin_unlock(&np->lock); - } - } + spin_lock(&np->lock); + nv_tx_done_optimized(dev, TX_WORK_PER_LOOP); + spin_unlock(&np->lock); - if (unlikely(np->events & NVREG_IRQ_LINK)) { - spin_lock(&np->lock); - nv_link_irq(dev); - spin_unlock(&np->lock); - } - if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) { - spin_lock(&np->lock); - nv_linkchange(dev); - spin_unlock(&np->lock); - np->link_timeout = jiffies + LINK_TIMEOUT; - } - if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) { + if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) { + if (unlikely(nv_alloc_rx_optimized(dev))) { spin_lock(&np->lock); - /* disable interrupts on the nic */ - if (!(np->msi_flags & NV_MSI_X_ENABLED)) - writel(0, base + NvRegIrqMask); - else - writel(np->irqmask, base + NvRegIrqMask); - pci_push(base); - - if (!np->in_shutdown) { - np->nic_poll_irq = np->irqmask; - np->recover_error = 1; - mod_timer(&np->nic_poll, jiffies + POLL_WAIT); - } + if (!np->in_shutdown) + mod_timer(&np->oom_kick, jiffies + OOM_REFILL); spin_unlock(&np->lock); - break; } + } - if (unlikely(i > max_interrupt_work)) { - spin_lock(&np->lock); - /* disable interrupts on the nic */ - if (!(np->msi_flags & NV_MSI_X_ENABLED)) - writel(0, base + NvRegIrqMask); - else - writel(np->irqmask, base + NvRegIrqMask); - pci_push(base); + if (unlikely(np->events & NVREG_IRQ_LINK)) { + spin_lock(&np->lock); + nv_link_irq(dev); + spin_unlock(&np->lock); + } + if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) { + spin_lock(&np->lock); + nv_linkchange(dev); + spin_unlock(&np->lock); + np->link_timeout = jiffies + LINK_TIMEOUT; + } + if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) { + spin_lock(&np->lock); + /* disable interrupts on the nic */ + if (!(np->msi_flags & NV_MSI_X_ENABLED)) + writel(0, base + NvRegIrqMask); + else + writel(np->irqmask, base + NvRegIrqMask); + pci_push(base); - if (!np->in_shutdown) { - np->nic_poll_irq = np->irqmask; - mod_timer(&np->nic_poll, jiffies + POLL_WAIT); - } - spin_unlock(&np->lock); - printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i); - break; + if (!np->in_shutdown) { + np->nic_poll_irq = np->irqmask; + np->recover_error = 1; + mod_timer(&np->nic_poll, jiffies + POLL_WAIT); } -#endif + spin_unlock(&np->lock); } + +#endif dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized completed\n", dev->name); - return IRQ_RETVAL(i); + return IRQ_HANDLED; } static irqreturn_t nv_nic_irq_tx(int foo, void *data)