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From 5dd3f1799baf4683c0161f7e49d65bee17f3e35d Mon Sep 17 00:00:00 2001
From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Wed, 31 Aug 2016 16:31:38 -0400
Subject: [PATCH] rtl8xxxu: Handle devices with a smaller LLT buffer
The 8188e (except for I cut parts) seem to have a smaller LLT buffer
than all other known devices.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
---
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h | 1 +
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c | 1 +
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 11 ++++++++---
3 files changed, 10 insertions(+), 3 deletions(-)
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
@@ -1411,6 +1411,7 @@ struct rtl8xxxu_fileops {
u8 page_num_hi;
u8 page_num_lo;
u8 page_num_norm;
+ u8 last_llt_entry;
};
extern int rtl8xxxu_debug;
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
@@ -1454,4 +1454,5 @@ struct rtl8xxxu_fileops rtl8188eu_fops =
.page_num_hi = TX_PAGE_NUM_HI_PQ_8188E,
.page_num_lo = TX_PAGE_NUM_LO_PQ_8188E,
.page_num_norm = TX_PAGE_NUM_NORM_PQ_8188E,
+ .last_llt_entry = 176,
};
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
@@ -2485,11 +2485,16 @@ static int rtl8xxxu_llt_write(struct rtl
int rtl8xxxu_init_llt_table(struct rtl8xxxu_priv *priv)
{
int ret;
- int i;
+ int i, last_entry;
u8 last_tx_page;
last_tx_page = priv->fops->total_page_num;
+ if (priv->fops->last_llt_entry)
+ last_entry = priv->fops->last_llt_entry;
+ else
+ last_entry = 255;
+
for (i = 0; i < last_tx_page; i++) {
ret = rtl8xxxu_llt_write(priv, i, i + 1);
if (ret)
@@ -2501,14 +2506,14 @@ int rtl8xxxu_init_llt_table(struct rtl8x
goto exit;
/* Mark remaining pages as a ring buffer */
- for (i = last_tx_page + 1; i < 0xff; i++) {
+ for (i = last_tx_page + 1; i < last_entry; i++) {
ret = rtl8xxxu_llt_write(priv, i, (i + 1));
if (ret)
goto exit;
}
/* Let last entry point to the start entry of ring buffer */
- ret = rtl8xxxu_llt_write(priv, 0xff, last_tx_page + 1);
+ ret = rtl8xxxu_llt_write(priv, last_entry, last_tx_page + 1);
if (ret)
goto exit;
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