From: Simon Glass <sjg@chromium.org>
Date: Tue, 6 Nov 2018 22:21:20 +0000 (-0700)
Subject: cros_ec: Fail if we cannot determine the flash burst size
X-Git-Url: http://git.dujemihanovic.xyz/img/static/git-logo.png?a=commitdiff_plain;h=dc05ac0f2f3a5b2f301e2790afe45cb11cf0258f;p=u-boot.git

cros_ec: Fail if we cannot determine the flash burst size

This value is required for flashing to work correctly. Add a check for
it.

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

diff --git a/drivers/misc/cros_ec.c b/drivers/misc/cros_ec.c
index e0f3dfc98e..7daf16499a 100644
--- a/drivers/misc/cros_ec.c
+++ b/drivers/misc/cros_ec.c
@@ -827,6 +827,9 @@ int cros_ec_flash_write(struct udevice *dev, const uint8_t *data,
 	uint32_t end, off;
 	int ret;
 
+	if (!burst)
+		return -EINVAL;
+
 	/*
 	 * TODO: round up to the nearest multiple of write size.  Can get away
 	 * without that on link right now because its write size is 4 bytes.