Avoid two potential divisions by zero when calculating average
values for the zip statistics.
Signed-off-by: Jan Glauber <jglau...@cavium.com>
Reviewed-by: Robert Richter <rrich...@cavium.com>
---
drivers/crypto/cavium/zip/zip_main.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/crypto/cavium/zip/zip_main.c
b/drivers/crypto/cavium/zip/zip_main.c
index 1cd8aa488185..79b449e0f955 100644
--- a/drivers/crypto/cavium/zip/zip_main.c
+++ b/drivers/crypto/cavium/zip/zip_main.c
@@ -482,10 +482,11 @@ static int zip_show_stats(struct seq_file *s, void
*unused)
atomic64_add(val, &st->pending_req);
}
- avg_chunk = (atomic64_read(&st->comp_in_bytes) /
- atomic64_read(&st->comp_req_complete));
- avg_cr = (atomic64_read(&st->comp_in_bytes) /
- atomic64_read(&st->comp_out_bytes));
+ val = atomic64_read(&st->comp_req_complete);
+ avg_chunk = (val) ? atomic64_read(&st->comp_in_bytes) /
val : 0;
+
+ val = atomic64_read(&st->comp_out_bytes);
+ avg_cr = (val) ? atomic64_read(&st->comp_in_bytes) /
val : 0;
seq_printf(s, " ZIP Device %d Stats\n"
"-----------------------------------\n"
"Comp Req Submitted : \t%lld\n"
--
2.16.2
