[U-Boot] [PATCH 03/25] cros_ec: Fail if we cannot determine the flash burst size

[Simon Glass]

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

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

 drivers/misc/cros_ec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/misc/cros_ec.c b/drivers/misc/cros_ec.c
index e0f3dfc98e0..7daf16499aa 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.
-- 
2.19.1.930.g4563a0d9d0-goog