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staging: android: ram_console: drop early buffer support 

Early ramconsole is not very useful, an early crash will prevent
getting the logged data out on the next boot, and CONFIG_DEBUG_LL=y
will get the same information.  Drop it to simplify a future
refactoring.

CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Colin Cross 2012-03-07 17:34:30 -08:00 committed by Greg Kroah-Hartman
parent f6ccb80ed6
commit 8294e2362f
2 changed files with 0 additions and 45 deletions
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16
drivers/staging/android/Kconfig
View File

@ -39,7 +39,6 @@ menuconfig ANDROID_RAM_CONSOLE_ERROR_CORRECTION
bool "Android RAM Console Enable error correction"
default n
depends on ANDROID_RAM_CONSOLE
depends on !ANDROID_RAM_CONSOLE_EARLY_INIT
select REED_SOLOMON
select REED_SOLOMON_ENC8
select REED_SOLOMON_DEC8
@ -70,21 +69,6 @@ config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_POLYNOMIAL
endif # ANDROID_RAM_CONSOLE_ERROR_CORRECTION
config ANDROID_RAM_CONSOLE_EARLY_INIT
bool "Start Android RAM console early"
default n
depends on ANDROID_RAM_CONSOLE
config ANDROID_RAM_CONSOLE_EARLY_ADDR
hex "Android RAM console virtual address"
default 0
depends on ANDROID_RAM_CONSOLE_EARLY_INIT
config ANDROID_RAM_CONSOLE_EARLY_SIZE
hex "Android RAM console buffer size"
default 0
depends on ANDROID_RAM_CONSOLE_EARLY_INIT
config ANDROID_TIMED_OUTPUT
bool "Timed output class driver"
default y

29
drivers/staging/android/ram_console.c
View File

@ -36,10 +36,6 @@ struct ram_console_buffer {
#define RAM_CONSOLE_SIG (0x43474244) /* DBGC */
#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT
static char __initdata
ram_console_old_log_init_buffer[CONFIG_ANDROID_RAM_CONSOLE_EARLY_SIZE];
#endif
static char *ram_console_old_log;
static size_t ram_console_old_log_size;
static const char *bootinfo;
@ -313,16 +309,6 @@ static ssize_t ram_console_ecc_string(char *str, size_t len)
#endif
}
#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT
static int __init ram_console_early_init(void)
{
return ram_console_init((struct ram_console_buffer *)
CONFIG_ANDROID_RAM_CONSOLE_EARLY_ADDR,
CONFIG_ANDROID_RAM_CONSOLE_EARLY_SIZE,
NULL,
ram_console_old_log_init_buffer);
}
#else
static int ram_console_driver_probe(struct platform_device *pdev)
{
struct resource *res = pdev->resource;
@ -369,7 +355,6 @@ static int __init ram_console_module_init(void)
err = platform_driver_register(&ram_console_driver);
return err;
}
#endif
static ssize_t ram_console_read_old(struct file *file, char __user *buf,
size_t len, loff_t *offset)
@ -431,16 +416,6 @@ static int __init ram_console_late_init(void)
if (ram_console_old_log == NULL)
return 0;
#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT
ram_console_old_log = kmemdup(ram_console_old_log_init_buffer,
ram_console_old_log_size, GFP_KERNEL);
if (ram_console_old_log == NULL) {
printk(KERN_ERR
"ram_console: failed to allocate buffer for old log\n");
ram_console_old_log_size = 0;
return 0;
}
#endif
entry = create_proc_entry("last_kmsg", S_IFREG | S_IRUGO, NULL);
if (!entry) {
printk(KERN_ERR "ram_console: failed to create proc entry\n");
@ -454,10 +429,6 @@ static int __init ram_console_late_init(void)
return 0;
}
#ifdef CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT
console_initcall(ram_console_early_init);
#else
postcore_initcall(ram_console_module_init);
#endif
late_initcall(ram_console_late_init);