linux-kernel - [PATCH v2] wifi: rtl8xxxu: correct the error value of 'timeout'

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Date:   Wed, 15 Nov 2023 13:01:24 +0800
From:   Su Hui <suhui@...china.com>
To:     pkshih@...ltek.com, Jes.Sorensen@...il.com
Cc:     Su Hui <suhui@...china.com>, kvalo@...nel.org,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH v2] wifi: rtl8xxxu: correct the error value of 'timeout'

When 'rtl8xxxu_dma_agg_pages <= page_thresh', 'timeout' should equal to
'page_thresh' rather than '4'. Change the code order to fix this problem.

Fixes: fd83f1227826 ("rtl8xxxu: gen1: Add module parameters to adjust DMA aggregation parameters")
Signed-off-by: Su Hui <suhui@...china.com>
---
v2:
 -  correct the problem about Fixes tag.

 .../net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c    | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
index 43ee7592bc6e..9cab8b1dc486 100644
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
@@ -4757,6 +4757,12 @@ void rtl8xxxu_gen1_init_aggregation(struct rtl8xxxu_priv *priv)
 	 *   RxAggPageTimeout = 4 or 6 (absolute time 34ms/(2^6))
 	 */
 
+	/* REG_RXDMA_AGG_PG_TH + 1 seems to be the timeout register on
+	 * gen2 chips and rtl8188eu. The rtl8723au seems unhappy if we
+	 * don't set it, so better set both.
+	 */
+	timeout = 4;
+
 	page_thresh = (priv->fops->rx_agg_buf_size / 512);
 	if (rtl8xxxu_dma_agg_pages >= 0) {
 		if (rtl8xxxu_dma_agg_pages <= page_thresh)
@@ -4771,12 +4777,6 @@ void rtl8xxxu_gen1_init_aggregation(struct rtl8xxxu_priv *priv)
 				__func__, rtl8xxxu_dma_agg_pages, page_thresh);
 	}
 	rtl8xxxu_write8(priv, REG_RXDMA_AGG_PG_TH, page_thresh);
-	/*
-	 * REG_RXDMA_AGG_PG_TH + 1 seems to be the timeout register on
-	 * gen2 chips and rtl8188eu. The rtl8723au seems unhappy if we
-	 * don't set it, so better set both.
-	 */
-	timeout = 4;
 
 	if (rtl8xxxu_dma_agg_timeout >= 0) {
 		if (rtl8xxxu_dma_agg_timeout <= 127)
-- 
2.30.2