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| author | Simon Horman <horms+renesas@verge.net.au> | 2013-07-26 17:53:42 +0900 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2013-07-31 10:11:17 +0900 |
| commit | a601469386b543df2a4d97ad7d524716945278a3 (patch) | |
| tree | f81f38cfb2351352bb9bbdffe01b61c468e86be2 /arch | |
| parent | fa3e0cee12fbdd9e0b03470b2b8cf968f537c161 (diff) | |
| download | linux-a601469386b543df2a4d97ad7d524716945278a3.tar.gz linux-a601469386b543df2a4d97ad7d524716945278a3.tar.bz2 linux-a601469386b543df2a4d97ad7d524716945278a3.zip | |
ARM: shmobile: lager: do not annotate gpio_buttons as __initdata
When the gpio-keys device is registered using
platform_device_register_data() the platform data argument,
lager_keys_pdata is duplicated and thus should be marked as __initdata
to avoid wasting memory. However, this is not true of gpio_buttons,
a reference to it rather than its value is duplicated when lager_keys_pdata
is duplicated.
This avoids accessing freed memory if gpio-key events occur
after unused kernel memory is freed late in the kernel's boot.
This but was added when support for gpio-keys was added to lager
in c3842e4fcbb7664276443b79187b7808c2e80a35
("ARM: shmobile: lager: support GPIO switches") which was included
in v3.11-rc1.
Tested-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-shmobile/board-lager.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-shmobile/board-lager.c b/arch/arm/mach-shmobile/board-lager.c index d73e21d3ea8a..8d6bd5c5efb9 100644 --- a/arch/arm/mach-shmobile/board-lager.c +++ b/arch/arm/mach-shmobile/board-lager.c @@ -59,7 +59,7 @@ static __initdata struct gpio_led_platform_data lager_leds_pdata = { #define GPIO_KEY(c, g, d, ...) \ { .code = c, .gpio = g, .desc = d, .active_low = 1 } -static __initdata struct gpio_keys_button gpio_buttons[] = { +static struct gpio_keys_button gpio_buttons[] = { GPIO_KEY(KEY_4, RCAR_GP_PIN(1, 28), "SW2-pin4"), GPIO_KEY(KEY_3, RCAR_GP_PIN(1, 26), "SW2-pin3"), GPIO_KEY(KEY_2, RCAR_GP_PIN(1, 24), "SW2-pin2"), |