From 26683005dd6aabf5a67c41d167e6109e5b8ae4e0 Mon Sep 17 00:00:00 2001
From: yidong0635 <dongx.yi@intel.com>
Date: Wed, 15 May 2019 08:30:00 -0400
Subject: [PATCH] lib/ftl: fix scanbuild error about divided by zero.

We should add assert here to avoid be divided by zero,
that resolve this scanbuild error.

Change-Id: I12fa11cdbf0f608995f91759140408303e243357
Signed-off-by: yidong0635 <dongx.yi@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/454539
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
---
 lib/ftl/ftl_band.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/ftl/ftl_band.c b/lib/ftl/ftl_band.c
index d622edceb..f106bfb5d 100644
--- a/lib/ftl/ftl_band.c
+++ b/lib/ftl/ftl_band.c
@@ -581,6 +581,7 @@ ftl_band_next_xfer_ppa(struct ftl_band *band, struct ftl_ppa ppa, size_t num_lbk
 	}
 	assert(band->num_chunks == _num_chunks);
 #endif
+	assert(band->num_chunks != 0);
 	num_stripes = (num_lbks / dev->xfer_size) / band->num_chunks;
 	ppa.lbk  += num_stripes * dev->xfer_size;
 	num_lbks -= num_stripes * dev->xfer_size * band->num_chunks;