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rt2800: nulify all last words of TXWI

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Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stanislaw Gruszka 2013-04-17 14:30:48 +02:00 committed by John W. Linville
parent f0bda57104
commit 557985ae34
1 changed files with 7 additions and 4 deletions
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11
drivers/net/wireless/rt2x00/rt2800lib.c
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@ -542,6 +542,7 @@ void rt2800_write_tx_data(struct queue_entry *entry,
{
__le32 *txwi = rt2800_drv_get_txwi(entry);
u32 word;
int i;
/*
* Initialize TX Info descriptor
@ -584,14 +585,16 @@ void rt2800_write_tx_data(struct queue_entry *entry,
rt2x00_desc_write(txwi, 1, word);
/*
* Always write 0 to IV/EIV fields, hardware will insert the IV
* from the IVEIV register when TXD_W3_WIV is set to 0.
* Always write 0 to IV/EIV fields (word 2 and 3), hardware will insert
* the IV from the IVEIV register when TXD_W3_WIV is set to 0.
* When TXD_W3_WIV is set to 1 it will use the IV data
* from the descriptor. The TXWI_W1_WIRELESS_CLI_ID indicates which
* crypto entry in the registers should be used to encrypt the frame.
*
* Nulify all remaining words as well, we don't know how to program them.
*/
_rt2x00_desc_write(txwi, 2, 0 /* skbdesc->iv[0] */);
_rt2x00_desc_write(txwi, 3, 0 /* skbdesc->iv[1] */);
for (i = 2; i < entry->queue->winfo_size / sizeof(__le32); i++)
_rt2x00_desc_write(txwi, i, 0);
}
EXPORT_SYMBOL_GPL(rt2800_write_tx_data);