From: Jussi Kivilinna <jussi.kivilinna@iki.fi>
To: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Christian Clauss <cclauss@bluewin.ch>,
ziv_huang@realtek.com, georgia@realtek.com,
linux-wireless <linux-wireless@vger.kernel.org>
Subject: Re: rtl8192cu NOT working on Raspberry Pi
Date: Sun, 17 Mar 2013 11:12:42 +0200 [thread overview]
Message-ID: <5145890A.7070308@iki.fi> (raw)
In-Reply-To: <5144FECC.6050504@lwfinger.net>
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On 17.03.2013 01:22, Larry Finger wrote:
> On 03/16/2013 05:03 PM, Christian Clauss wrote:
>> Hi Larry, Ziv, and Georgia,
>>
>> These rtl8192cu drivers seem to be very flakey / non-functional on Raspberry Pi.
>>
>> https://github.com/hexameron/rtlwifi
>>
>> http://www.raspberrypi.org/phpBB3/viewtopic.php?f=71&t=24951
>
> Sorry, but I only support the drivers in the current Linux kernel, and as backported with compat-drivers.
>
Problems I had with rtl8192cu on arm/sunxi, were mostly related to USB host driver not handling unaligned and/or overlapping URB buffers correctly which lead to memory corruption and random crashes. So if you get problematic behavior with latest compat-drivers (+ with the patch Larry pointed out), I'd say look at USB host driver of raspberry.
You can check the workarounds for sunxi-ehci/ohci and tegra-ehci at:
https://github.com/linux-sunxi/linux-sunxi/blob/stage/sunxi-3.4/drivers/usb/host/ehci-tegra.c#L386
https://github.com/linux-sunxi/linux-sunxi/blob/stage/sunxi-3.4/drivers/usb/host/sw_hci_sunxi.c#L633
-Jussi
<snip>
>
> There is a major bug in rtl8192cu that was just fixed this past week. See http://marc.info/?l=linux-wireless&m=136319807619280&w=2 for the patch.
>
> Larry
>
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next prev parent reply other threads:[~2013-03-17 9:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <041DFAF5-BEDE-4C1A-9863-A04F2DD3049A@bluewin.ch>
2013-03-16 23:22 ` rtl8192cu NOT working on Raspberry Pi Larry Finger
2013-03-17 9:12 ` Jussi Kivilinna [this message]
2013-03-17 15:06 ` Adrian Chadd
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