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From 614e389f36a9d709469a74508d76c5df5141149a Mon Sep 17 00:00:00 2001
From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Mon, 27 Jun 2016 12:32:09 -0400
Subject: [PATCH] rtl8xxxu: gen1: Set aggregation timeout (REG_RXDMA_AGG_PG_TH
+ 1) as well
gen2 chips as well as 8188eu seems to use this register for setting
DMA timeout threshold values, however the 8192cu is using
REG_USB_DMA_AGG_TO. Set both to be on the safe side.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
@@ -4410,7 +4410,7 @@ void rtl8xxxu_gen2_report_connect(struct
void rtl8xxxu_gen1_init_aggregation(struct rtl8xxxu_priv *priv)
{
- u8 agg_ctrl, usb_spec, page_thresh;
+ u8 agg_ctrl, usb_spec, page_thresh, timeout;
usb_spec = rtl8xxxu_read8(priv, REG_USB_SPECIAL_OPTION);
usb_spec &= ~USB_SPEC_USB_AGG_ENABLE;
@@ -4442,7 +4442,14 @@ void rtl8xxxu_gen1_init_aggregation(stru
page_thresh = (priv->fops->rx_agg_buf_size / 512);
rtl8xxxu_write8(priv, REG_RXDMA_AGG_PG_TH, page_thresh);
- rtl8xxxu_write8(priv, REG_USB_DMA_AGG_TO, 4);
+ /*
+ * 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;
+ rtl8xxxu_write8(priv, REG_RXDMA_AGG_PG_TH + 1, timeout);
+ rtl8xxxu_write8(priv, REG_USB_DMA_AGG_TO, timeout);
priv->rx_buf_aggregation = 1;
}
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