[edk2-devel] [PATCH] MdeModulePkg/UsbBusDxe: Return error when the device is not present

[Marcin Wojtas]

Until now, during the USB device enumeration when its PortState
USB_PORT_STAT_CONNECTION bit was not set, the stack was not informed
that the device is not present. Fix that by returning appropriate
error code.

Change-Id: I588f82b987993e9755f64ce76cde9eb690ef1d54
Signed-off-by: Marcin Wojtas <mw at semihalf.com>
---
 MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c
index be9d9bd..ab1db15 100644
--- a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c
+++ b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c
@@ -719,6 +719,7 @@ UsbEnumerateNewDev (
 
   if (!USB_BIT_IS_SET (PortState.PortStatus, USB_PORT_STAT_CONNECTION)) {
     DEBUG ((EFI_D_ERROR, "UsbEnumerateNewDev: No device present at port %d\n", Port));
+    Status = EFI_NOT_FOUND;
     goto ON_ERROR;
   } else if (USB_BIT_IS_SET (PortState.PortStatus, USB_PORT_STAT_SUPER_SPEED)){
     Child->Speed      = EFI_USB_SPEED_SUPER;
-- 
2.7.4


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