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| author | Sonic Zhang <sonic.zhang@analog.com> | 2010-10-27 04:16:48 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-11 11:06:08 -0800 |
| commit | 001a05d56edd9d82b27e69951fb9520f9ce6ed72 (patch) | |
| tree | 570468ad8f31ede2f3c266e3a399e9fd295e886d /drivers/serial | |
| parent | b6100992e31e61a2f252acb8df1f65c01f0b626d (diff) | |
| download | linux-3.10-001a05d56edd9d82b27e69951fb9520f9ce6ed72.tar.gz linux-3.10-001a05d56edd9d82b27e69951fb9520f9ce6ed72.tar.bz2 linux-3.10-001a05d56edd9d82b27e69951fb9520f9ce6ed72.zip | |
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/serial')
| -rw-r--r-- | drivers/serial/bfin_5xx.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c index c8ca3b43487..a454e427c94 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) |