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wl1271: Update TX path block calucation algo

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Update the TX path block calculation algorithm based on TI reference.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Juuso Oikarinen 2009-10-12 15:08:53 +03:00 committed by John W. Linville
parent 3cfd6cf960
commit 207347e498
1 changed files with 2 additions and 2 deletions
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4
drivers/net/wireless/wl12xx/wl1271_tx.c
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@ -57,8 +57,8 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra)
/* approximate the number of blocks required for this packet
in the firmware */
/* FIXME: try to figure out what is done here and make it cleaner */
total_blocks = (total_len) >> TX_HW_BLOCK_SHIFT_DIV;
excluded = (total_blocks << 2) + (skb->len & 0xff) + 34;
total_blocks = (total_len + 20) >> TX_HW_BLOCK_SHIFT_DIV;
excluded = (total_blocks << 2) + ((total_len + 20) & 0xff) + 34;
total_blocks += (excluded > 252) ? 2 : 1;
total_blocks += TX_HW_BLOCK_SPARE;