[coreboot] New patch to review for coreboot: 6ce9398 libpayload: Disable some buggy debugging code

[Nico Huber]

Nico Huber ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1074

-gerrit

commit 6ce9398ed02e1fd55b1f329de89e4eff5e1c8c2a
Author: Nico Huber 
Date:   Mon May 21 14:38:08 2012 +0200

libpayload: Disable some buggy debugging code

This disables some debugging code in the OHCI USB driver which causes
    reboots under rare circumstances.

Change-Id: Ic274c162846137ee00638ffbc59ccf1d8130586f
    Signed-off-by: Nico Huber 
---
 payloads/libpayload/drivers/usb/ohci.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/payloads/libpayload/drivers/usb/ohci.c b/payloads/libpayload/drivers/usb/ohci.c
index 3a1b51d..fa7db3a 100644
--- a/payloads/libpayload/drivers/usb/ohci.c
+++ b/payloads/libpayload/drivers/usb/ohci.c
@@ -214,6 +214,11 @@ wait_for_ed(usbdev_t *dev, ed_t *head)
    	mdelay(1);
    }
    mdelay(5);
+#if 0
+	/* XXX: The following debugging code may follow invalid lists and
+	 *      cause a reboot.
+	 */
+#ifdef USB_DEBUG
    if (OHCI_INST(dev->controller)->opreg->HcInterruptStatus & WritebackDoneHead) {
    	debug("done queue:\n");
    	debug("%x, %x\n", OHCI_INST(dev->controller)->hcca->HccaDoneHead, phys_to_virt(OHCI_INST(dev->controller)->hcca->HccaDoneHead));
@@ -236,6 +241,8 @@ wait_for_ed(usbdev_t *dev, ed_t *head)
    	}
    	OHCI_INST(dev->controller)->opreg->HcInterruptStatus &= ~WritebackDoneHead;
    }
+#endif
+#endif

if (head->head_pointer & 1) {
    	debug("HALTED!\n");