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37 lines
1.4 KiB
Diff
37 lines
1.4 KiB
Diff
From a8508bf7ced2e43f30b46333f09cbc79a1675616 Mon Sep 17 00:00:00 2001
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From: P Praneesh <ppranees@codeaurora.org>
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Date: Fri, 12 Nov 2021 11:02:45 +0200
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Subject: [PATCH] ath11k: remove mod operator in dst ring processing
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Replace use of mod operator with a manual wrap around
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to avoid additional cost of using mod operation.
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Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01734-QCAHKSWPL_SILICONZ-1 v2
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Co-developed-by: Sriram R <srirrama@codeaurora.org>
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Signed-off-by: Sriram R <srirrama@codeaurora.org>
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Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
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Signed-off-by: P Praneesh <ppranees@codeaurora.org>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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Link: https://lore.kernel.org/r/1630560820-21905-10-git-send-email-ppranees@codeaurora.org
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---
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drivers/net/wireless/ath/ath11k/hal.c | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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--- a/drivers/net/wireless/ath/ath11k/hal.c
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+++ b/drivers/net/wireless/ath/ath11k/hal.c
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@@ -654,8 +654,11 @@ u32 *ath11k_hal_srng_dst_get_next_entry(
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desc = srng->ring_base_vaddr + srng->u.dst_ring.tp;
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- srng->u.dst_ring.tp = (srng->u.dst_ring.tp + srng->entry_size) %
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- srng->ring_size;
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+ srng->u.dst_ring.tp += srng->entry_size;
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+
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+ /* wrap around to start of ring*/
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+ if (srng->u.dst_ring.tp == srng->ring_size)
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+ srng->u.dst_ring.tp = 0;
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/* Try to prefetch the next descriptor in the ring */
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if (srng->flags & HAL_SRNG_FLAGS_CACHED)
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