[PATCH 09/12] ath11k: remove mod operator in dst ring processing
From: Jouni Malinen <hidden>
Date: 2021-06-15 22:45:06
Also in:
ath11k
Subsystem:
atheros ath generic utilities, qualcomm atheros ath11k wireless driver, the rest · Maintainers:
Jeff Johnson, Linus Torvalds
From: P Praneesh <redacted> 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 <redacted> Signed-off-by: Sriram R <redacted> Signed-off-by: P Praneesh <redacted> Signed-off-by: Jouni Malinen <redacted> --- drivers/net/wireless/ath/ath11k/hal.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
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)
--
2.25.1