From: Bin Meng <bmeng.cn@gmail.com>
Date: Fri, 30 Nov 2018 04:07:13 +0000 (-0800)
Subject: efi: payload: only init usb if necessary
X-Git-Tag: v2019.01-rc2~18^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d3d6531866f2d7aa85b053cef553090b251e909f;p=platform%2Fkernel%2Fu-boot.git

efi: payload: only init usb if necessary

Up until now the call to initialize the USB subsystem was hardcoded
for U-Boot running as an EFI payload. This was used to enable the
use of a USB keyboard in the U-Boot shell. However not all boards
might need this functionality. As initializing the USB subsystem can
take a considerable amount of time (several seconds on some boards),
we now initialize the USB subsystem only if U-Boot is configured to
use USB keyboards.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
---

diff --git a/arch/x86/cpu/efi/payload.c b/arch/x86/cpu/efi/payload.c
index c323c7b..225aef7 100644
--- a/arch/x86/cpu/efi/payload.c
+++ b/arch/x86/cpu/efi/payload.c
@@ -166,7 +166,8 @@ int reserve_arch(void)
 int last_stage_init(void)
 {
 	/* start usb so that usb keyboard can be used as input device */
-	usb_init();
+	if (CONFIG_IS_ENABLED(USB_KEYBOARD))
+		usb_init();
 
 	return 0;
 }