mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-25 11:55:37 +00:00
Code Issues Releases Wiki Activity

wifi: rtl8xxxu: fix authentication timeout due to incorrect RCR value

Browse source 
When using rtl8192cu with rtl8xxxu driver to connect wifi, there is a
probability of failure, which shows "authentication with ... timed out".
Through debugging, it was found that the RCR register has been inexplicably
modified to an incorrect value, resulting in the nic not being able to
receive authenticated frames.

To fix this problem, add regrcr in rtl8xxxu_priv struct, and store
the RCR value every time the register is written, and use it the next
time the register need to be modified.

Signed-off-by: Yun Lu <luyun@kylinos.cn>
Link: https://lore.kernel.org/all/20230427020512.1221062-1-luyun_611@163.com
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230512012055.2990472-1-luyun_611@163.com
This commit is contained in:
Yun Lu 2023-05-12 09:20:55 +08:00 committed by Kalle Valo
parent 60fc756fc8
commit 20429444e6
2 changed files with 4 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
View file

@ -1803,6 +1803,7 @@ struct rtl8xxxu_priv {
u32 rege9c;
u32 regeb4;
u32 regebc;
u32 regrcr;
int next_mbox;
int nr_out_eps;

4
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
View file

@ -4171,6 +4171,7 @@ static int rtl8xxxu_init_device(struct ieee80211_hw *hw)
RCR_ACCEPT_MGMT_FRAME | RCR_HTC_LOC_CTRL |
RCR_APPEND_PHYSTAT | RCR_APPEND_ICV | RCR_APPEND_MIC;
rtl8xxxu_write32(priv, REG_RCR, val32);
priv->regrcr = val32;
if (fops->init_reg_rxfltmap) {
/* Accept all data frames */
@ -6501,7 +6502,7 @@ static void rtl8xxxu_configure_filter(struct ieee80211_hw *hw,
unsigned int *total_flags, u64 multicast)
{
struct rtl8xxxu_priv *priv = hw->priv;
u32 rcr = rtl8xxxu_read32(priv, REG_RCR);
u32 rcr = priv->regrcr;
dev_dbg(&priv->udev->dev, "%s: changed_flags %08x, total_flags %08x\n",
__func__, changed_flags, *total_flags);
@ -6547,6 +6548,7 @@ static void rtl8xxxu_configure_filter(struct ieee80211_hw *hw,
*/
rtl8xxxu_write32(priv, REG_RCR, rcr);
priv->regrcr = rcr;
*total_flags &= (FIF_ALLMULTI | FIF_FCSFAIL | FIF_BCN_PRBRESP_PROMISC |
FIF_CONTROL | FIF_OTHER_BSS | FIF_PSPOLL |