4.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nicolas Schichan <nschichan@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: Alexandre Courbot <acourbot@xxxxxxxxxx>
Patchwork: https://patchwork.linux-mips.org/patch/9530/
Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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();
}
--
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