[PATCH 4.0 07/72] MIPS: BCM63xx: Move bcm63xx_gpio_init() to bcm63xx_register_devices().

Greg Kroah-Hartman
2015-05-11T18:58:28Z

From: Nicolas Schichan <nschichan@freebox.fr>

Commit 2ec459f2a77b808c1e5a3616c88b613d3f720c8d upstream.

When called from prom init code, bcm63xx_gpio_init() will fail as it
will call gpiochip_add() which relies on a working kmalloc() to alloc
the gpio_desc array and kmalloc is not useable yet at prom init time.

Move bcm63xx_gpio_init() to bcm63xx_register_devices() (an
arch_initcall) where kmalloc works.

Fixes: 14e85c0e69d5 ("gpio: remove gpio_descs global array")

Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Alexandre Courbot <acourbot@nvidia.com>
Patchwork: https://patchwork.linux-mips.org/patch/9530/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/mips/bcm63xx/prom.c | 4 ----
arch/mips/bcm63xx/setup.c | 4 ++++
2 files changed, 4 insertions(+), 4 deletions(-)

--- a/arch/mips/bcm63xx/prom.c
+++ b/arch/mips/bcm63xx/prom.c
@@ -17,7 +17,6 @@
#include <bcm63xx_cpu.h>
#include <bcm63xx_io.h>
#include <bcm63xx_regs.h>
-#include <bcm63xx_gpio.h>

void __init prom_init(void)
{
@@ -53,9 +52,6 @@ void __init prom_init(void)
reg &= ~mask;
bcm_perf_writel(reg, PERF_CKCTL_REG);

- /* register gpiochip */
- bcm63xx_gpio_init();
-
/* do low level board init */
board_prom_init();

--- a/arch/mips/bcm63xx/setup.c
+++ b/arch/mips/bcm63xx/setup.c
@@ -20,6 +20,7 @@
#include <bcm63xx_cpu.h>
#include <bcm63xx_regs.h>
#include <bcm63xx_io.h>
+#include <bcm63xx_gpio.h>

void bcm63xx_machine_halt(void)
{
@@ -160,6 +161,9 @@ void __init plat_mem_setup(void)

int __init bcm63xx_register_devices(void)
{
+ /* register gpiochip */
+ bcm63xx_gpio_init();
+
return board_register_devices();
}