[PATCH v5 2/5] baseband/acc100: add protection for some negative scenario

[Nicolas Chautru]

Catch exception in PMD in case of invalid input parameter.

Fixes: 5ad5060f8f7a ("baseband/acc100: add LDPC processing functions")
Cc: stable at dpdk.org

Signed-off-by: Nicolas Chautru <nicolas.chautru at intel.com>
---
 drivers/baseband/acc100/rte_acc100_pmd.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/baseband/acc100/rte_acc100_pmd.c b/drivers/baseband/acc100/rte_acc100_pmd.c
index 9135c0e..3fdf17d 100644
--- a/drivers/baseband/acc100/rte_acc100_pmd.c
+++ b/drivers/baseband/acc100/rte_acc100_pmd.c
@@ -1236,6 +1236,8 @@
 			return (bg == 1 ? ACC100_K0_3_1 : ACC100_K0_3_2) * z_c;
 	}
 	/* LBRM case - includes a division by N */
+	if (unlikely(z_c == 0))
+		return 0;
 	if (rv_index == 1)
 		return (((bg == 1 ? ACC100_K0_1_1 : ACC100_K0_1_2) * n_cb)
 				/ n) * z_c;
@@ -1764,6 +1766,10 @@
 
 	/* Soft output */
 	if (check_bit(op->turbo_dec.op_flags, RTE_BBDEV_TURBO_SOFT_OUTPUT)) {
+		if (op->turbo_dec.soft_output.data == 0) {
+			rte_bbdev_log(ERR, "Soft output is not defined");
+			return -1;
+		}
 		if (check_bit(op->turbo_dec.op_flags,
 				RTE_BBDEV_TURBO_EQUALIZER))
 			*s_out_length = e;
-- 
1.8.3.1