Re: [PATCH] staging: r8712u: Fix driver to support ad-hoc mode

From: Larry Finger
Date: Thu Apr 28 2011 - 11:31:38 EST


On 04/28/2011 10:08 AM, clemens fischer wrote:
Larry Finger:

From: Jeff Chua<jeff.chua.linux@xxxxxxxxx>

Driver r8712u is unable to handle ad-hoc mode. The issue is that when
the driver first starts, there will not be an SSID for association.
The fix is to always call the "select and join from scan" routine when
in ad-hoc mode.

Note: Ad-hoc mode worked intermittently before. If the driver had
previously been associated, then things were OK.

Signed-off-by: Jeff Chua<jeff.chua.linux@xxxxxxxxx>
Signed-off-by: Larry Finger<Larry.Finger@xxxxxxxxxxxx>
Cc: Stable<stable@xxxxxxxxxx>
---

Index: linux-2.6/drivers/staging/rtl8712/rtl871x_ioctl_set.c
===================================================================
--- linux-2.6.orig/drivers/staging/rtl8712/rtl871x_ioctl_set.c
+++ linux-2.6/drivers/staging/rtl8712/rtl871x_ioctl_set.c
@@ -68,7 +68,10 @@ static u8 do_join(struct _adapter *padap
pmlmepriv->fw_state |= _FW_UNDER_LINKING;
pmlmepriv->pscanned = plist;
pmlmepriv->to_join = true;
- if (_queue_empty(queue) == true) {
+
+ /* adhoc mode will start with an empty queue, but skip checking */
+ if (!check_fwstate(pmlmepriv, WIFI_ADHOC_STATE)&&
+ _queue_empty(queue)) {
if (pmlmepriv->fw_state& _FW_UNDER_LINKING)
pmlmepriv->fw_state ^= _FW_UNDER_LINKING;
/* when set_ssid/set_bssid for do_join(), but scanning queue

Thanks for CC'ing me.

This patch doesn't solve my problem[1], unfortunately. I am using
iwconfig(8) to setup things, and it is still impossible to set the ESSID
and the power saving mode. In my case it was even possible to get into
Ad-hoc mode without the patch and without ever beeing associated.

[1] https://bugzilla.kernel.org/show_bug.cgi?id=33352

Does this one help? It should be in addition to the previous patch.

Larry Index: linux-2.6/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
===================================================================
--- linux-2.6.orig/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
+++ linux-2.6/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
@@ -990,8 +990,6 @@ static int r8711_wx_set_wap(struct net_d
struct wlan_network *pnetwork = NULL;
enum NDIS_802_11_AUTHENTICATION_MODE authmode;

- if (padapter->bup == false)
- return -1;
if (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY) == true)
return -1;
if (check_fwstate(pmlmepriv, _FW_UNDER_LINKING) == true)
@@ -1182,8 +1180,6 @@ static int r8711_wx_set_essid(struct net
struct list_head *phead;
u32 len;

- if (padapter->bup == false)
- return -1;
if (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY))
return -1;
if (check_fwstate(pmlmepriv, _FW_UNDER_LINKING))