diff options
Diffstat (limited to 'target/linux/aruba-2.6/patches/012-ehci_softirq.patch')
| -rw-r--r-- | target/linux/aruba-2.6/patches/012-ehci_softirq.patch | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/target/linux/aruba-2.6/patches/012-ehci_softirq.patch b/target/linux/aruba-2.6/patches/012-ehci_softirq.patch new file mode 100644 index 0000000000..ae7f9f26c8 --- /dev/null +++ b/target/linux/aruba-2.6/patches/012-ehci_softirq.patch @@ -0,0 +1,70 @@ +diff -Nurb linux-2.6.16.1/drivers/usb/host/ehci.h linux-patched/drivers/usb/host/ehci.h +--- linux-2.6.16.1/drivers/usb/host/ehci.h 2006-03-27 22:49:02.000000000 -0800 ++++ linux-patched/drivers/usb/host/ehci.h 2006-04-07 12:07:30.000000000 -0700 +@@ -82,6 +82,7 @@ + struct dma_pool *sitd_pool; /* sitd per split iso urb */ + + struct timer_list watchdog; ++ struct timer_list softirq; + struct notifier_block reboot_notifier; + unsigned long actions; + unsigned stamp; +diff -Nurb linux-2.6.16.1/drivers/usb/host/ehci-hcd.c linux-patched/drivers/usb/host/ehci-hcd.c +--- linux-2.6.16.1/drivers/usb/host/ehci-hcd.c 2006-03-27 22:49:02.000000000 -0800 ++++ linux-patched/drivers/usb/host/ehci-hcd.c 2006-04-07 13:20:13.000000000 -0700 +@@ -116,6 +116,7 @@ + #define EHCI_IO_JIFFIES (HZ/10) /* io watchdog > irq_thresh */ + #define EHCI_ASYNC_JIFFIES (HZ/20) /* async idle timeout */ + #define EHCI_SHRINK_JIFFIES (HZ/200) /* async qh unlink delay */ ++#define EHCI_SOFTIRQ (HZ/400) + + /* Initial IRQ latency: faster than hw default */ + static int log2_irq_thresh = 0; // 0 to 6 +@@ -263,6 +264,16 @@ + #include "ehci-sched.c" + + /*-------------------------------------------------------------------------*/ ++static irqreturn_t ehci_irq (struct usb_hcd *hcd, struct pt_regs *regs); ++ ++static void ehci_softirq (unsigned long param) ++{ ++ struct ehci_hcd *ehci = (struct ehci_hcd *) param; ++ ++ if (ehci_irq(ehci_to_hcd(ehci),0) != IRQ_NONE) ++ set_bit(HCD_FLAG_SAW_IRQ, &(ehci_to_hcd(ehci))->flags); ++ mod_timer (&ehci->softirq, jiffies + EHCI_SOFTIRQ); ++} + + static void ehci_watchdog (unsigned long param) + { +@@ -280,6 +291,10 @@ + COUNT (ehci->stats.lost_iaa); + writel (STS_IAA, &ehci->regs->status); + ehci->reclaim_ready = 1; ++ if (!timer_pending(&ehci->softirq)) { ++ ehci_info(ehci, "switching to softirq\n"); ++ mod_timer (&ehci->softirq, jiffies + EHCI_SOFTIRQ); ++ } + } + } + +@@ -371,6 +388,7 @@ + + /* no more interrupts ... */ + del_timer_sync (&ehci->watchdog); ++ del_timer_sync (&ehci->softirq); + + spin_lock_irq(&ehci->lock); + if (HC_IS_RUNNING (hcd->state)) +@@ -418,6 +436,10 @@ + ehci->watchdog.function = ehci_watchdog; + ehci->watchdog.data = (unsigned long) ehci; + ++ init_timer(&ehci->softirq); ++ ehci->softirq.function = ehci_softirq; ++ ehci->softirq.data = (unsigned long) ehci; ++ + /* + * hw default: 1K periodic list heads, one per frame. + * periodic_size can shrink by USBCMD update if hcc_params allows. + |