diff options
| -rw-r--r-- | MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h index 8b6babb08e..638be9988b 100644 --- a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h +++ b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h @@ -109,10 +109,13 @@ typedef enum { USB_SET_ROOT_PORT_ENABLE_STALL = 20 * USB_BUS_1_MILLISECOND,
//
- // Send general device request timeout, refers to
- // specification[USB20-11.24.1]
+ // Send general device request timeout.
+ //
+ // The USB Specification 2.0, section 11.24.1 recommends a value of
+ // 50 milliseconds. We use a value of 100 milliseconds to work
+ // around slower hubs and devices.
//
- USB_GENERAL_DEVICE_REQUEST_TIMEOUT = 50,
+ USB_GENERAL_DEVICE_REQUEST_TIMEOUT = 100,
//
// Send clear feature request timeout, set by experience
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