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From 3ab047939db70fcae2a7c5993a8feaf3ac413e35 Mon Sep 17 00:00:00 2001
From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Wed, 29 Jun 2016 11:53:31 -0400
Subject: [PATCH] rtl8xxxu: 8188e add REG_TXDMA_OFFSET_CHK quirk
Enable quirk allowing TX DMA to drop redundant data of packet. This is
the same quirk enabled on gen2 parts.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
---
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
@@ -203,6 +203,7 @@ exit:
static void rtl8188e_usb_quirks(struct rtl8xxxu_priv *priv)
{
u16 val16;
+ u32 val32;
/*
* Technically this is not a USB quirk, but a chip quirk.
@@ -212,6 +213,10 @@ static void rtl8188e_usb_quirks(struct r
val16 = rtl8xxxu_read16(priv, REG_CR);
val16 |= (CR_MAC_TX_ENABLE | CR_MAC_RX_ENABLE);
rtl8xxxu_write16(priv, REG_CR, val16);
+
+ val32 = rtl8xxxu_read32(priv, REG_TXDMA_OFFSET_CHK);
+ val32 |= TXDMA_OFFSET_DROP_DATA_EN;
+ rtl8xxxu_write32(priv, REG_TXDMA_OFFSET_CHK, val32);
}
struct rtl8xxxu_fileops rtl8188eu_fops = {
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