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authorBaurzhan Ismagulov <ibr@radix50.net>2010-11-11 10:53:03 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2010-11-11 11:35:59 -0800
commit5b04ec4ad8e2ffdc9d1f27fd6eb5118e919bc87d (patch)
tree5e5b6ce308c019c9d8e0e3ace7afcae16e6acedc /README
parent63295cb2ff4329f563579f3d20c5855a96a866d5 (diff)
serial: cpm_uat: reducing CPM serial latency
Setting Rx FIFO size to 1 reduces reader process wakeup latency up to 20x for baud rates <= 9600. This patch sets the Rx FIFO size to 1 for baud rates <= 9600 or if low latency has been requested for the tty. Signed-off-by: Michael Trimarchi <michael@gandalf.sssup.it> Signed-off-by: Bruno Morelli <bruno@evidence.eu.com> Signed-off-by: Baurzhan Ismagulov <ibr@radix50.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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