diff options
| author | Florian Fainelli <florian@openwrt.org> | 2009-08-01 23:51:20 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-08-03 17:52:46 +0100 |
| commit | a1b021d3992d9be03b0abec1a7ed78e713b94206 (patch) | |
| tree | d6928ff79743aa275d6088f1db5abff6c75fd862 | |
| parent | 619e22632ea3110323b1851a7fecb52bf8505fd2 (diff) | |
| download | linux-a1b021d3992d9be03b0abec1a7ed78e713b94206.tar.bz2 | |
MIPS: MTX-1: Request button GPIO before setting its direction
This patch fixes the following warning at boot time:
WARNING: at drivers/gpio/gpiolib.c:83 0x8021d5e0()
autorequest GPIO-207
Modules linked in:
Call Trace:[<8011e0ec>] 0x8011e0ec
[<80110a28>] 0x80110a28
[<80110a28>] 0x80110a28
[..snip..]
The current code does not request the GPIO and attempts
to set its direction, which is a violation of the GPIO API.
This patch also unhardcode the GPIO we request and use
the one we defined in the button driver.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/alchemy/mtx-1/platform.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/mips/alchemy/mtx-1/platform.c b/arch/mips/alchemy/mtx-1/platform.c index 8b5914d1241f..e30e42add697 100644 --- a/arch/mips/alchemy/mtx-1/platform.c +++ b/arch/mips/alchemy/mtx-1/platform.c @@ -1,7 +1,7 @@ /* * MTX-1 platform devices registration * - * Copyright (C) 2007, Florian Fainelli <florian@openwrt.org> + * Copyright (C) 2007-2009, Florian Fainelli <florian@openwrt.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -142,7 +142,17 @@ static struct __initdata platform_device * mtx1_devs[] = { static int __init mtx1_register_devices(void) { - gpio_direction_input(207); + int rc; + + rc = gpio_request(mtx1_gpio_button[0].gpio, + mtx1_gpio_button[0].desc); + if (rc < 0) { + printk(KERN_INFO "mtx1: failed to request %d\n", + mtx1_gpio_button[0].gpio); + goto out; + } + gpio_direction_input(mtx1_gpio_button[0].gpio); +out: return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs)); } |