Commit 557985ae authored by Stanislaw Gruszka's avatar Stanislaw Gruszka Committed by John W. Linville
Browse files

rt2800: nulify all last words of TXWI 



Signed-off-by: default avatarStanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent f0bda571

drivers/net/wireless/rt2x00/rt2800lib.c

+7 −4
Original line number Diff line number Diff line
@@ -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);