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path: root/drivers/usb/host/ehci-hcd.c
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Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
-rw-r--r--drivers/usb/host/ehci-hcd.c21
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index f8030ee928e8..f72ae0b6ee7f 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -94,7 +94,8 @@ static const char hcd_name [] = "ehci_hcd";
#define EHCI_IAA_MSECS 10 /* arbitrary */
#define EHCI_IO_JIFFIES (HZ/10) /* io watchdog > irq_thresh */
#define EHCI_ASYNC_JIFFIES (HZ/20) /* async idle timeout */
-#define EHCI_SHRINK_FRAMES 5 /* async qh unlink delay */
+#define EHCI_SHRINK_JIFFIES (DIV_ROUND_UP(HZ, 200) + 1)
+ /* 200-ms async qh unlink delay */
/* Initial IRQ latency: faster than hw default */
static int log2_irq_thresh = 0; // 0 to 6
@@ -114,7 +115,7 @@ MODULE_PARM_DESC (ignore_oc, "ignore bogus hardware overcurrent indications");
/* for link power management(LPM) feature */
static unsigned int hird;
module_param(hird, int, S_IRUGO);
-MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us\n");
+MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us");
#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
@@ -152,10 +153,7 @@ timer_action(struct ehci_hcd *ehci, enum ehci_timer_action action)
break;
/* case TIMER_ASYNC_SHRINK: */
default:
- /* add a jiffie since we synch against the
- * 8 KHz uframe counter.
- */
- t = DIV_ROUND_UP(EHCI_SHRINK_FRAMES * HZ, 1000) + 1;
+ t = EHCI_SHRINK_JIFFIES;
break;
}
mod_timer(&ehci->watchdog, t + jiffies);
@@ -340,6 +338,7 @@ static void ehci_work(struct ehci_hcd *ehci);
#include "ehci-mem.c"
#include "ehci-q.c"
#include "ehci-sched.c"
+#include "ehci-sysfs.c"
/*-------------------------------------------------------------------------*/
@@ -524,7 +523,7 @@ static void ehci_stop (struct usb_hcd *hcd)
ehci_reset (ehci);
spin_unlock_irq(&ehci->lock);
- remove_companion_file(ehci);
+ remove_sysfs_files(ehci);
remove_debug_files (ehci);
/* root hub is shut down separately (first, when possible) */
@@ -575,6 +574,12 @@ static int ehci_init(struct usb_hcd *hcd)
hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params);
/*
+ * by default set standard 80% (== 100 usec/uframe) max periodic
+ * bandwidth as required by USB 2.0
+ */
+ ehci->uframe_periodic_max = 100;
+
+ /*
* hw default: 1K periodic list heads, one per frame.
* periodic_size can shrink by USBCMD update if hcc_params allows.
*/
@@ -758,7 +763,7 @@ static int ehci_run (struct usb_hcd *hcd)
* since the class device isn't created that early.
*/
create_debug_files(ehci);
- create_companion_file(ehci);
+ create_sysfs_files(ehci);
return 0;
}