rt2800: nulify all last words of TXWI (557985ae) · Commits · 戴 / test

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);