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authorNico Huber <nico.huber@secunet.com>2014-07-07 17:11:53 +0200
committerPatrick Georgi <patrick@georgi-clan.de>2014-07-10 20:55:41 +0200
commitf4316f8c101b956af624b0c046c418b4489f6558 (patch)
treeb73a53fc2ff71f85651c302c1beba9be21735a95 /payloads/libpayload/drivers/usb
parent8b8e96370dc709299da7a6393f6e190bb557685e (diff)
downloadcoreboot-f4316f8c101b956af624b0c046c418b4489f6558.tar.xz
libpayload: Catch null-pointer dereference in xHCI
Fix a possible null-pointer dereference (hopefully) before anyone runs into this. Also don't switch ports to xHCI if initialization failed. Change-Id: I5dbaeb435a98ead0b50d27fde13c9f1433ea3e81 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/6245 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'payloads/libpayload/drivers/usb')
-rw-r--r--payloads/libpayload/drivers/usb/xhci.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/payloads/libpayload/drivers/usb/xhci.c b/payloads/libpayload/drivers/usb/xhci.c
index 97c27bcd50..69ddab791a 100644
--- a/payloads/libpayload/drivers/usb/xhci.c
+++ b/payloads/libpayload/drivers/usb/xhci.c
@@ -312,9 +312,11 @@ xhci_pci_init (pcidev_t addr)
}
controller = xhci_init((unsigned long)reg_addr);
- controller->pcidev = addr;
+ if (controller) {
+ controller->pcidev = addr;
- xhci_switch_ppt_ports(addr);
+ xhci_switch_ppt_ports(addr);
+ }
return controller;
}