carl9170: revamp carl9170_tx_prepare

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David Miller complained about the driver's excessive use
of variables in __packed structs. While I did not fully
agree with his sole "performance" argument on all accounts.
I do see some room for improvement in hot-paths on
architectures without an efficient access to unaligned
elements.

This first patch (dare I say?) optimizes an important tx
hot-path in the driver: carl9170_tx_prepare.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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Christian Lamparter 2010-09-27 01:36:38 +02:00 • committed by John W. Linville

parent 9c655c8be9

commit 4bd437ea40

1 changed files with 75 additions and 80 deletions

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drivers/net/wireless/ath/carl9170/tx.c

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