lkml.org 
[lkml]   [2015]   [Sep]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.2 015/134] rtlwifi: rtl8821ae: Fix an expression that is always false
Date
4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Larry Finger <Larry.Finger@lwfinger.net>

commit 251086f588720277a6f5782020a648ce32c4e00b upstream.

In routine _rtl8821ae_set_media_status(), an incorrect mask results in a test
for AP status to always be false. Similar bugs were fixed in rtl8192cu and
rtl8192de, but this instance was missed at that time.

Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: David Binderman <dcb314@hotmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/wireless/rtlwifi/rtl8821ae/hw.c | 2 +-
drivers/net/wireless/rtlwifi/rtl8821ae/reg.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
@@ -2180,7 +2180,7 @@ static int _rtl8821ae_set_media_status(s

rtl_write_byte(rtlpriv, MSR, bt_msr);
rtlpriv->cfg->ops->led_control(hw, ledaction);
- if ((bt_msr & 0xfc) == MSR_AP)
+ if ((bt_msr & MSR_MASK) == MSR_AP)
rtl_write_byte(rtlpriv, REG_BCNTCFG + 1, 0x00);
else
rtl_write_byte(rtlpriv, REG_BCNTCFG + 1, 0x66);
--- a/drivers/net/wireless/rtlwifi/rtl8821ae/reg.h
+++ b/drivers/net/wireless/rtlwifi/rtl8821ae/reg.h
@@ -429,6 +429,7 @@
#define MSR_ADHOC 0x01
#define MSR_INFRA 0x02
#define MSR_AP 0x03
+#define MSR_MASK 0x03

#define RRSR_RSC_OFFSET 21
#define RRSR_SHORT_OFFSET 23



\
 
 \ /
  Last update: 2015-09-27 00:41    [W:0.506 / U:1.788 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site