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

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Message-ID: <20110428150819.GA3713@spotteswoode.de.eu.org>
Date:	Thu, 28 Apr 2011 17:08:20 +0200
From:	clemens fischer <ino-news@...tteswoode.dnsalias.org>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>, jeff.chua.linux@...il.com,
	wlanfae@...ltek.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: r8712u: Fix driver to support ad-hoc mode

> Larry Finger:

> From: Jeff Chua <jeff.chua.linux@...il.com>
>
> 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@...il.com>
> Signed-off-by: Larry Finger <Larry.Finger@...inger.net>
> Cc: Stable <stable@...nel.org>
> ---
>
> 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


regards, clemens fischer
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