From ffc83aa24aa2493603d97390d22785930f67f232 Mon Sep 17 00:00:00 2001
From: Augustin Cavalier <waddlesplash@gmail.com>
Date: Tue, 28 Sep 2021 14:36:44 -0400
Subject: [PATCH] USB bus drivers: Add missing iterator increments.

Should fix boot hang regressions introduced in hrev55455
in the fix for #17275.
---
 src/add-ons/kernel/busses/usb/ehci.cpp | 2 ++
 src/add-ons/kernel/busses/usb/ohci.cpp | 2 ++
 src/add-ons/kernel/busses/usb/uhci.cpp | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/src/add-ons/kernel/busses/usb/ehci.cpp b/src/add-ons/kernel/busses/usb/ehci.cpp
index d8713479a2..d62dfe3614 100644
--- a/src/add-ons/kernel/busses/usb/ehci.cpp
+++ b/src/add-ons/kernel/busses/usb/ehci.cpp
@@ -1558,6 +1558,8 @@ EHCI::AddPendingTransfer(Transfer *transfer, ehci_qh *queueHead,
 			delete data;
 			return B_DEV_RESOURCE_CONFLICT;
 		}
+
+		it = it->link;
 	}
 
 	if (fLastTransfer)
diff --git a/src/add-ons/kernel/busses/usb/ohci.cpp b/src/add-ons/kernel/busses/usb/ohci.cpp
index 2490c5b534..a991be2147 100644
--- a/src/add-ons/kernel/busses/usb/ohci.cpp
+++ b/src/add-ons/kernel/busses/usb/ohci.cpp
@@ -1460,6 +1460,8 @@ OHCI::_SubmitTransfer(Transfer *transfer)
 			_FreeDescriptorChain(firstDescriptor);
 			return B_DEV_RESOURCE_CONFLICT;
 		}
+
+		it = it->link;
 	}
 
 	result = _AddPendingTransfer(transfer, endpoint, firstDescriptor,
diff --git a/src/add-ons/kernel/busses/usb/uhci.cpp b/src/add-ons/kernel/busses/usb/uhci.cpp
index 86c13cd6f2..f6a500b1f7 100644
--- a/src/add-ons/kernel/busses/usb/uhci.cpp
+++ b/src/add-ons/kernel/busses/usb/uhci.cpp
@@ -1076,6 +1076,8 @@ UHCI::AddPendingTransfer(Transfer *transfer, Queue *queue,
 			delete data;
 			return B_DEV_RESOURCE_CONFLICT;
 		}
+
+		it = it->link;
 	}
 
 	if (fLastTransfer)