On 04/06/2012 03:48 AM, Nicu Pavel wrote:
----> ifdown/ifup no scanning results.
<6>rtl8192cu: MAC auto ON okay!
<6>rtl8192cu: Tx queue select: 0x05
<7>rtl8192c_common:rtl92c_phy_set_bw_mode():<0-0> FALSE driver sleep or unload
<6>rtl8192c_common: Loading firmware file rtlwifi/rtl8192cufw.bin
<7>rtl8192cu:rtl92cu_set_hw_reg():<0-0> ### Set RCR(0xf0002ace) ###
<7>rtlwifi:rtl_op_conf_tx():<0-0> queue number -954253944 is incorrect!
<7>rtlwifi:rtl_op_conf_tx():<0-0> queue number -954253944 is incorrect!
<7>rtlwifi:rtl_op_conf_tx():<0-0> queue number -954253944 is incorrect!
<7>rtlwifi:rtl_op_conf_tx():<0-0> queue number -954253944 is incorrect!
<7>rtl8192cu:rtl92cu_set_hw_reg():<0-0> ### Set RCR(0xf0002a0e) ###
----> ifdown/ifup no scanning results.
Please try the attached patch. After looking at the backtraces for the calls
that set the BSSID filters, I could see no reason for the driver to fail, yet it
did. Once I kept those bits clear you did in the beginning, then it works. The
amount of extra overhead will be minimal as the bits were only set for a short time.
If this patch works for you, then I will send it upstream for mainline and
stable. The best place to keep the bits clear would be in the calling routine,
not in rtl92cu_set_hw_reg(); however, that patch will be much more intrusive and
would not be accepted for 3.4.
Larry
Index: wireless-testing-new/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
===================================================================
--- wireless-testing-new.orig/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
+++ wireless-testing-new/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
@@ -1867,8 +1867,14 @@ void rtl92cu_set_hw_reg(struct ieee80211
break;
}
case HW_VAR_RCR:{
- rtl_write_dword(rtlpriv, REG_RCR, ((u32 *) (val))[0]);
mac->rx_conf = ((u32 *) (val))[0];
+ /* whenever the driver sets bits enabling only a
+ * specific BSSID for beacons or data, a failure
+ * occurs. Thus we do not allow those bits to be set */
+ if (mac->rx_conf & (RCR_CBSSID_BCN | RCR_CBSSID_DATA))
+ mac->rx_conf &= ~(RCR_CBSSID_BCN |
+ RCR_CBSSID_DATA);
+ rtl_write_dword(rtlpriv, REG_RCR, ((u32 *) (val))[0]);
RT_TRACE(rtlpriv, COMP_RECV, DBG_DMESG,
"### Set RCR(0x%08x) ###\n", mac->rx_conf);
break;
