From 36d68668e33191d55b2a23c9f0ec0c1ffecd6897 Mon Sep 17 00:00:00 2001
From: Alexey Brodkin <abrodkin@synopsys.com>
Date: Tue, 24 Feb 2015 19:31:51 +0300
Subject: [PATCH] serial/serial_arc: set registers address during compilation
Being global variable with 0 value it falls into .bss area which we may
only use after relocation to RAM. And right afetr relocation we zero
.bss - effectively cleaing register address set for early console.
Now with pre-set value "regs" variable is no longer in .bss and this way
safely survives relocation.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
---
drivers/serial/serial_arc.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/serial/serial_arc.c b/drivers/serial/serial_arc.c
index 2ddbf32a50..0ee8ce5e7d 100644
--- a/drivers/serial/serial_arc.c
+++ b/drivers/serial/serial_arc.c
@@ -28,7 +28,7 @@ struct arc_serial_regs {
#define UART_OVERFLOW_ERR (1 << 1)
#define UART_TXEMPTY (1 << 7)
-struct arc_serial_regs *regs;
+struct arc_serial_regs *regs = (struct arc_serial_regs *)CONFIG_ARC_UART_BASE;
static void arc_serial_setbrg(void)
{
@@ -60,7 +60,6 @@ static void arc_serial_setbrg(void)
static int arc_serial_init(void)
{
- regs = (struct arc_serial_regs *)CONFIG_ARC_UART_BASE;
serial_setbrg();
return 0;
}