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serial: bfin_sport_uart: work around anomaly 05000473 (make 32bit fifo read atomic)
authorSonic Zhang <sonic.zhang@analog.com>
Tue, 9 Mar 2010 17:25:28 +0000 (12:25 -0500)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 21 May 2010 16:34:27 +0000 (09:34 -0700)
commita5a420d207df40226afbf828c12bd9b4c6e058ef
treeaf4d91ce3f0f65728bbf6a7da86a5ee5e867292ftree | snapshot (tar.gz zip)
parentd7dbf4ffee1c7a17e2e5b5f01efe76fbd1671db6commit | diff
serial: bfin_sport_uart: work around anomaly 05000473 (make 32bit fifo read atomic)

We cannot let a 32-bit RX FIFO read be interrupted otherwise a fake RX
underflow error might be generated.

URL: http://blackfin.uclinux.org/gf/tracker/5145

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/serial/bfin_sport_uart.h diff | blob | blame | history