From 9e84b60ed87f5fe2dce10be2db1bfbb926a49e66 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@ftp.linux.org.uk>
Date: Sat, 23 Sep 2006 01:39:45 +0100
Subject: [PATCH] [POWERPC] UPIO_TSI cleanup
(le32_to_cpu(x) >> 8) & 0xff is a very odd way to spell (x >> 16) & 0xff,
even if that code is hit only on ppc. The value is host-endian - we've
got it from readl(), after all...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
drivers/serial/8250.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 0ae9ced00ed4db..10c2daab99ac15 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -320,8 +320,8 @@ static unsigned int serial_in(struct uart_8250_port *up, int offset)
case UPIO_TSI:
if (offset == UART_IIR) {
- tmp = readl((u32 *)(up->port.membase + UART_RX));
- return (cpu_to_le32(tmp) >> 8) & 0xff;
+ tmp = readl(up->port.membase + (UART_IIR & ~3));
+ return (tmp >> 16) & 0xff; /* UART_IIR % 4 == 2 */
} else
return readb(up->port.membase + offset);
--
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