omap2+: Fix omap_serial_early_init to work with init_early hook

The new init_early hook happens at the end of setup_arch,
which is too early for kzalloc. However, there's no need
to call omap_serial_early_init that early, so fix this
by setting it up as a core_initcall.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Kevin Hilman <khilman@ti.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index 32e91a9c8b6b..74e25cd4bd3a 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -655,7 +655,7 @@ static void serial_out_override(struct uart_port *up, int offset, int value)
 }
 #endif
 
-void __init omap_serial_early_init(void)
+static int __init omap_serial_early_init(void)
 {
         int i = 0;
 
@@ -672,7 +672,7 @@ void __init omap_serial_early_init(void)
 
                 uart = kzalloc(sizeof(struct omap_uart_state), GFP_KERNEL);
                 if (WARN_ON(!uart))
-                        return;
+                        return -ENODEV;
 
                 uart->oh = oh;
                 uart->num = i++;
@@ -691,7 +691,10 @@ void __init omap_serial_early_init(void)
                  */
                 uart->oh->flags |= HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET;
         } while (1);
+
+        return 0;
 }
+core_initcall(omap_serial_early_init);
 
 /**
  * omap_serial_init_port() - initialize single serial port