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authorAlexander Shishkin <virtuoso@slind.org>2010-01-08 10:29:06 -0800
committerTony Lindgren <tony@atomide.com>2010-01-08 10:29:06 -0800
commit9230372aeecc0a634f708e9eb8668769daa1ed5a (patch)
tree69acba1ad11e9b3e4e79efdd63002557864ffeaf /arch/arm
parent66215949e6512f61c2c92b65ea79f8566e9e650a (diff)
omap2/3: make serial_in_override() address the right uart port
Commit f62349ee9788b1d94c55eb6c291d74a1f69bdd9e 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>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-omap2/serial.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index 19805a7de06..8c964bec815 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -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)