diff options
Diffstat (limited to 'payloads/libpayload/drivers/usb/uhci.c')
| -rw-r--r-- | payloads/libpayload/drivers/usb/uhci.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/payloads/libpayload/drivers/usb/uhci.c b/payloads/libpayload/drivers/usb/uhci.c index e62fd25a2d..32d40901a0 100644 --- a/payloads/libpayload/drivers/usb/uhci.c +++ b/payloads/libpayload/drivers/usb/uhci.c @@ -272,21 +272,23 @@ uhci_stop (hci_t *controller) uhci_reg_read16(controller, USBCMD) & ~1); // stop work on schedule } +#define UHCI_SLEEP_TIME_US 30 +#define UHCI_TIMEOUT (USB_MAX_PROCESSING_TIME_US / UHCI_SLEEP_TIME_US) #define GET_TD(x) ((void*)(((unsigned int)(x))&~0xf)) static td_t * wait_for_completed_qh (hci_t *controller, qh_t *qh) { - int timeout = 1000; /* max 30 ms. */ + int timeout = UHCI_TIMEOUT; void *current = GET_TD (qh->elementlinkptr); while (((qh->elementlinkptr & FLISTP_TERMINATE) == 0) && (timeout-- > 0)) { if (current != GET_TD (qh->elementlinkptr)) { current = GET_TD (qh->elementlinkptr); - timeout = 1000; + timeout = UHCI_TIMEOUT; } uhci_reg_write16(controller, USBSTS, uhci_reg_read16(controller, USBSTS) | 0); // clear resettable registers - udelay (30); + udelay(UHCI_SLEEP_TIME_US); } return (GET_TD (qh->elementlinkptr) == 0) ? 0 : GET_TD (phys_to_virt (qh->elementlinkptr)); |