linux-kernel - Re: Fixing rt2500pci [PATCH]

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Date:	Thu, 31 Jul 2008 10:56:34 +1000
From:	Peter Chubb <peterc@...ato.unsw.edu.au>
To:	Ivo van Doorn <ivdoorn@...il.com>
Cc:	Peter Chubb <peterc@...ato.unsw.edu.au>,
	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
	John Linville <linville@...driver.com>
Subject: Re: Fixing rt2500pci [PATCH]


In kernel version 2.6.26-rc9 my wireless LAN card worked; but in the
released 2.6.26, my RaLink rt2500 card wouldn't associate.

Git-bisect led me to this patch:

	61486e0f68d1f8966c09b734566a187d42d65c54
	rt2x00: Remove ieee80211_tx_control argument from write_tx_desc()

I believe that there is a problem with that patch --- it
(inadvertantly) removes an extra line of code, that used to set the
DATABYTE_COUNT field.
 
This patch reinstates that line, and with it my card works again.
 
Signed-off-by: Peter Chubb <peterc@...ato.unsw.edu.au>
Acked-by: Ivo van Doorn <IvDoorn@...il.com>

diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c
index 1724ce9..4ba2165 100644
--- a/drivers/net/wireless/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/rt2x00/rt2500pci.c
@@ -1198,6 +1198,7 @@ static void rt2500pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
 	rt2x00_set_field32(&word, TXD_W0_IFS, txdesc->ifs);
 	rt2x00_set_field32(&word, TXD_W0_RETRY_MODE,
 			   test_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags));
+	rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, skbdesc->data_len);
 	rt2x00_set_field32(&word, TXD_W0_CIPHER_ALG, CIPHER_NONE);
 	rt2x00_desc_write(txd, 0, word);
 }

--
Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
http://www.ertos.nicta.com.au           ERTOS within National ICT Australia
--
Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
http://www.ertos.nicta.com.au           ERTOS within National ICT Australia
--
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