From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jonas Gorski Subject: [PATCH 1/3] MIPS: AR7: defer registration of GPIO Date: Sun, 29 Oct 2017 16:27:19 +0100 Message-ID: <20171029152721.6770-2-jonas.gorski@gmail.com> References: <20171029152721.6770-1-jonas.gorski@gmail.com> Return-path: In-Reply-To: <20171029152721.6770-1-jonas.gorski@gmail.com> Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-subscribe: List-owner: List-post: List-archive: To: linux-mips@linux-mips.org, linux-serial@vger.kernel.org Cc: Ralf Baechle , Greg Kroah-Hartman , Yoshihiro YUNOMAE , Florian Fainelli , Nicolas Schichan List-Id: linux-serial@vger.kernel.org When called from prom init code, ar7_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 ar7_gpio_init() to ar7_register_devices() (a device_initcall) where kmalloc works. Fixes: 14e85c0e69d5 ("gpio: remove gpio_descs global array") Signed-off-by: Jonas Gorski --- Text shamelessy stolen from commit 2ec459f2a77b8. arch/mips/ar7/platform.c | 4 ++++ arch/mips/ar7/prom.c | 2 -- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/mips/ar7/platform.c b/arch/mips/ar7/platform.c index df7acea3747a..f2c9f90c5f13 100644 --- a/arch/mips/ar7/platform.c +++ b/arch/mips/ar7/platform.c @@ -653,6 +653,10 @@ static int __init ar7_register_devices(void) u32 val; int res; + res = ar7_gpio_init(); + if (res) + pr_warn("unable to register gpios: %d\n", res); + res = ar7_register_uarts(); if (res) pr_err("unable to setup uart(s): %d\n", res); diff --git a/arch/mips/ar7/prom.c b/arch/mips/ar7/prom.c index 4fd83336131a..dd53987a690f 100644 --- a/arch/mips/ar7/prom.c +++ b/arch/mips/ar7/prom.c @@ -246,8 +246,6 @@ void __init prom_init(void) ar7_init_cmdline(fw_arg0, (char **)fw_arg1); ar7_init_env((struct env_var *)fw_arg2); console_config(); - - ar7_gpio_init(); } #define PORT(offset) (KSEG1ADDR(AR7_REGS_UART0 + (offset * 4))) -- 2.13.2