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authorSonic Zhang <sonic.zhang@analog.com>2010-10-27 08:16:48 (GMT)
committerGreg Kroah-Hartman <gregkh@suse.de>2010-11-11 19:06:08 (GMT)
commit001a05d56edd9d82b27e69951fb9520f9ce6ed72 (patch)
tree570468ad8f31ede2f3c266e3a399e9fd295e886d /drivers
parentb6100992e31e61a2f252acb8df1f65c01f0b626d (diff)
downloadlinux-001a05d56edd9d82b27e69951fb9520f9ce6ed72.tar.xz
serial: bfin_5xx: remove redundant SSYNC to improve TX speed
We don't need to force a SSYNC here as the LSR register will already be updated by the time we get back to reading it. This speeds up TX throughput and lowers general system overhead (since SSYNC is system wide, not peripheral-specific). 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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/serial/bfin_5xx.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index c8ca3b4..a454e42 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -359,7 +359,6 @@ static void bfin_serial_tx_chars(struct bfin_serial_port *uart)
UART_PUT_CHAR(uart, xmit->buf[xmit->tail]);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
uart->port.icount.tx++;
- SSYNC();
}
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)