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authorGabe Black <gabeblack@google.com>2012-11-21 01:52:27 -0800
committerAnton Kochkov <anton.kochkov@gmail.com>2013-02-26 07:39:06 +0100
commit37ef52d44b3d527d6a4fb84eaffa4260b7521d4a (patch)
treebe0598e4a7c22860cef3e675a43f927ab694e6b3 /payloads/libpayload/drivers/usb
parentb4523bb691037f78a0823299ef44c0e350e17759 (diff)
libpayload: Correct a constant used for scanning for USB controllers.
When checking to see if a PCI device exists at a particular bus/dev/func, libpayload was checking the vendor and device id fields together against a 16 bit 0xffff. The two fields together are 32 bits, however, so the check was never true, and all dev/func combinations on a particular bus would be checked. That was slightly wasteful, but had relatively small impact. Change-Id: Iad537295c33083243940b18e7a99af92857e1ef2 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: http://review.coreboot.org/2521 Tested-by: build bot (Jenkins) Reviewed-by: Dave Frodin <dave.frodin@se-eng.com> Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
Diffstat (limited to 'payloads/libpayload/drivers/usb')
-rw-r--r--payloads/libpayload/drivers/usb/usbinit.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/payloads/libpayload/drivers/usb/usbinit.c b/payloads/libpayload/drivers/usb/usbinit.c
index 2e466d307d..74358bb20f 100644
--- a/payloads/libpayload/drivers/usb/usbinit.c
+++ b/payloads/libpayload/drivers/usb/usbinit.c
@@ -123,7 +123,7 @@ static void usb_scan_pci_bus(int bus)
u8 header_type;
pcidev_t addr = PCI_DEV(bus, dev, 0);
/* Check if there's a device here at all. */
- if (pci_read_config32(addr, REG_VENDOR_ID) == 0xffff)
+ if (pci_read_config32(addr, REG_VENDOR_ID) == 0xffffffff)
continue;
header_type = pci_read_config8(addr, REG_HEADER_TYPE);
/* If this is a bridge, scan the bus on the other side. */