From: Simon Glass <sjg@chromium.org>
Date: Mon, 15 Mar 2021 05:11:08 +0000 (+1300)
Subject: sandbox: cros_ec: Only write EC state when the EC is probed
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=a5bc9abcee0ac8982c14f9cd585570a268eb9e47;p=u-boot.git

sandbox: cros_ec: Only write EC state when the EC is probed

This can crash if the EC has not yet been probed. Add a check to prevent
this.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

diff --git a/drivers/misc/cros_ec_sandbox.c b/drivers/misc/cros_ec_sandbox.c
index cb8adc4495..bc01df0904 100644
--- a/drivers/misc/cros_ec_sandbox.c
+++ b/drivers/misc/cros_ec_sandbox.c
@@ -153,10 +153,14 @@ static int cros_ec_write_state(void *blob, int node)
 {
 	struct ec_state *ec = g_state;
 
+	if (!g_state)
+		return 0;
+
 	/* We are guaranteed enough space to write basic properties */
 	fdt_setprop_u32(blob, node, "current-image", ec->current_image);
 	fdt_setprop(blob, node, "vbnv-context", ec->vbnv_context,
 		    sizeof(ec->vbnv_context));
+
 	return state_setprop(node, "flash-data", ec->flash_data,
 			     ec->ec_config.flash.length);
 }