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authorIvo van Doorn <ivdoorn@gmail.com>2008-12-20 10:54:22 +0100
committerJohn W. Linville <linville@tuxdriver.com>2009-01-29 15:58:34 -0500
commiteb20b4e8a6998ca68d9ac0963ee36a1a36fe241d (patch)
treecf35161f1f7573f73b9e2da74fc562a77169e459 /drivers/power/Makefile
parent84e3196ff867c623056eea02c11a45e046490d89 (diff)
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rt2x00: Reduce calls to bbp_read()
The link_tuner() function will always call bbp_read() at the start of the function. Because this is an indirect register access has some costs attached to it (especially for USB hardware). We already store the value read from the register into the vgc_level value inside the link structure. Instead of reading from the register we can read that field directly and base the tuner on that value. This reduces the time the registers are locked with the csr_mutex and speeds up the link_tuner processing. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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