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omap2/3: make serial_in_override() address the right uart port

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Commit f62349ee97 makes it possible to
have some other than first uart port as ttyS0, which breaks the workaround
serial_in_override() function which will try to address the first uart
port (for ttyS0) and not the one that was initialized.

Signed-off-by: Alexander Shishkin <virtuoso@slind.org>
CC: Mika Westerberg <ext-mika.1.westerberg@nokia.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Alexander Shishkin 2010-01-08 10:29:06 -08:00 committed by Tony Lindgren
parent 66215949e6
commit 9230372aee
1 changed files with 10 additions and 2 deletions
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12
arch/arm/mach-omap2/serial.c
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@ -125,6 +125,13 @@ static struct plat_serial8250_port serial_platform_data3[] = {
}
};
#endif
static inline unsigned int __serial_read_reg(struct uart_port *up,
int offset)
{
offset <<= up->regshift;
return (unsigned int)__raw_readb(up->membase + offset);
}
static inline unsigned int serial_read_reg(struct plat_serial8250_port *up,
int offset)
{
@ -583,11 +590,12 @@ static unsigned int serial_in_override(struct uart_port *up, int offset)
{
if (UART_RX == offset) {
unsigned int lsr;
lsr = serial_read_reg(omap_uart[up->line].p, UART_LSR);
lsr = __serial_read_reg(up, UART_LSR);
if (!(lsr & UART_LSR_DR))
return -EPERM;
}
return serial_read_reg(omap_uart[up->line].p, offset);
return __serial_read_reg(up, offset);
}
void __init omap_serial_early_init(void)