[PATCH v4 10/30] baseband/acc100: fix clearing PF IR outside handler

[Hernan Vargas]

Clearing of PF info ring outside of handler may cause interrupt to be
missed.
A condition in the ACC100 PMD implementation may cause an interrupt
functional handler call to be missed due to related bit being cleared
when checking PF info ring status.

Fixes: 06531464151 ("baseband/acc100: support interrupt")
Cc: stable at dpdk.org

Signed-off-by: Hernan Vargas <hernan.vargas at intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
---
 drivers/baseband/acc/rte_acc100_pmd.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/baseband/acc/rte_acc100_pmd.c b/drivers/baseband/acc/rte_acc100_pmd.c
index b79a251e9f..f892b402ca 100644
--- a/drivers/baseband/acc/rte_acc100_pmd.c
+++ b/drivers/baseband/acc/rte_acc100_pmd.c
@@ -262,11 +262,12 @@ acc100_check_ir(struct acc_device *acc100_dev)
 	while (ring_data->valid) {
 		if ((ring_data->int_nb < ACC100_PF_INT_DMA_DL_DESC_IRQ) || (
 				ring_data->int_nb >
-				ACC100_PF_INT_DMA_DL5G_DESC_IRQ))
+				ACC100_PF_INT_DMA_DL5G_DESC_IRQ)) {
 			rte_bbdev_log(WARNING, "InfoRing: ITR:%d Info:0x%x",
 				ring_data->int_nb, ring_data->detailed_info);
-		/* Initialize Info Ring entry and move forward */
-		ring_data->val = 0;
+			/* Initialize Info Ring entry and move forward */
+			ring_data->val = 0;
+		}
 		info_ring_head++;
 		ring_data = acc100_dev->info_ring +
 				(info_ring_head & ACC_INFO_RING_MASK);
-- 
2.37.1