diff mbox series

[09/12] ath11k: remove mod operator in dst ring processing

Message ID 20210615211407.92233-10-jouni@codeaurora.org
State New
Headers show
Series [01/12] ath11k: disable unused CE8 interrupts for ipq8074 | expand

Commit Message

Jouni Malinen June 15, 2021, 9:14 p.m. UTC 
From: P Praneesh <ppranees@codeaurora.org>

Replace use of the mod operator with a manual wrap around to avoid
additional cost of using the mod operation.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01734-QCAHKSWPL_SILICONZ-1 v2

Co-developed-by: Sriram R <srirrama@codeaurora.org>
Signed-off-by: Sriram R <srirrama@codeaurora.org>
Signed-off-by: P Praneesh <ppranees@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
---
 drivers/net/wireless/ath/ath11k/hal.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath11k/hal.c b/drivers/net/wireless/ath/ath11k/hal.c
index a58e86e42b5b..0326c2fed374 100644
--- a/drivers/net/wireless/ath/ath11k/hal.c
+++ b/drivers/net/wireless/ath/ath11k/hal.c
@@ -654,8 +654,11 @@  u32 *ath11k_hal_srng_dst_get_next_entry(struct ath11k_base *ab,
 
 	desc = srng->ring_base_vaddr + srng->u.dst_ring.tp;
 
-	srng->u.dst_ring.tp = (srng->u.dst_ring.tp + srng->entry_size) %
-			      srng->ring_size;
+	srng->u.dst_ring.tp += srng->entry_size;
+
+	/* wrap around to start of ring */
+	if (srng->u.dst_ring.tp == srng->ring_size)
+		srng->u.dst_ring.tp = 0;
 
 	/* Try to prefetch the next descriptor in the ring */
 	if (srng->flags & HAL_SRNG_FLAGS_CACHED)