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path: root/payloads/libpayload/drivers/usb/ohci.c
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Diffstat (limited to 'payloads/libpayload/drivers/usb/ohci.c')
-rw-r--r--payloads/libpayload/drivers/usb/ohci.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/payloads/libpayload/drivers/usb/ohci.c b/payloads/libpayload/drivers/usb/ohci.c
index ecd1084005..f1dc081656 100644
--- a/payloads/libpayload/drivers/usb/ohci.c
+++ b/payloads/libpayload/drivers/usb/ohci.c
@@ -292,14 +292,13 @@ ohci_stop (hci_t *controller)
OHCI_INST (controller)->opreg->HcControl &= ~PeriodicListEnable;
}
+#define OHCI_SLEEP_TIME_US 1000
+
static int
wait_for_ed(usbdev_t *dev, ed_t *head, int pages)
{
/* wait for results */
- /* TOTEST: how long to wait?
- * give 2s per TD (2 pages) plus another 2s for now
- */
- int timeout = pages*1000 + 2000;
+ int timeout = USB_MAX_PROCESSING_TIME_US / OHCI_SLEEP_TIME_US;
while (((head->head_pointer & ~3) != head->tail_pointer) &&
!(head->head_pointer & 1) &&
((((td_t*)phys_to_virt(head->head_pointer & ~3))->config
@@ -315,9 +314,9 @@ wait_for_ed(usbdev_t *dev, ed_t *head, int pages)
((td_t*)phys_to_virt(head->head_pointer & ~3))->next_td,
head->tail_pointer,
(((td_t*)phys_to_virt(head->head_pointer & ~3))->config & TD_CC_MASK) >> TD_CC_SHIFT);
- mdelay(1);
+ udelay(OHCI_SLEEP_TIME_US);
}
- if (timeout < 0)
+ if (timeout <= 0)
usb_debug("Error: ohci: endpoint "
"descriptor processing timed out.\n");
/* Clear the done queue. */