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drivers/tty/serial/serial_core.c: clean up HIGH_BITS_OFFSET usage

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serial_core.c usually does

	if (HIGH_BITS_OFFSET)
		expr-involving-HIGH_BITS_OFFSET()

at least to avoid generating useless code on 32-bit machines, where
HIGH_BITS_OFFSET is zero.  Do that in uart_get_attr_port().

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andrew Morton 2012-11-26 15:47:15 -08:00 committed by Greg Kroah-Hartman
parent d53c57dca2
commit fd985e1def
1 changed files with 5 additions and 1 deletions
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6
drivers/tty/serial/serial_core.c
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@ -2370,9 +2370,13 @@ static ssize_t uart_get_attr_port(struct device *dev,
{
struct serial_struct tmp;
struct tty_port *port = dev_get_drvdata(dev);
unsigned long ioaddr;
uart_get_info(port, &tmp);
return snprintf(buf, PAGE_SIZE, "0x%lX\n", (unsigned long)(tmp.port | (((unsigned long)tmp.port_high) << HIGH_BITS_OFFSET)));
ioaddr = tmp.port;
if (HIGH_BITS_OFFSET)
ioaddr |= (unsigned long)tmp.port_high << HIGH_BITS_OFFSET;
return snprintf(buf, PAGE_SIZE, "0x%lX\n", ioaddr);
}
static ssize_t uart_get_attr_irq(struct device *dev,