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Commit a40c8804 authored by Jan Glauber's avatar Jan Glauber Committed by Herbert Xu
Browse files

crypto: cavium - Prevent division by zero 



Avoid two potential divisions by zero when calculating average
values for the zip statistics.

Signed-off-by: default avatarJan Glauber <jglauber@cavium.com>
Reviewed-by: default avatarRobert Richter <rrichter@cavium.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent c782a8c4

drivers/crypto/cavium/zip/zip_main.c

+5 −4
Original line number Diff line number Diff line
@@ -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"