iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ACPI: update intrd DSDT override console messages

Browse Source 
also, address some checkpatch.pl violations

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2008-02-06 19:49:54 -05:00
parent d89e9d6b49
commit 04d94886b4
1 changed files with 18 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/acpi/osl.c
View File

@ -326,49 +326,50 @@ struct acpi_table_header *acpi_find_dsdt_initrd(void)
struct kstat stat;
char *ramfs_dsdt_name = "/DSDT.aml";
printk(KERN_INFO PREFIX "Looking for DSDT in initramfs... ");
printk(KERN_INFO PREFIX "Checking initramfs for custom DSDT");
/*
* Never do this at home, only the user-space is allowed to open a file.
* The clean way would be to use the firmware loader. But this code must be run
* before there is any userspace available. So we need a static/init firmware
* infrastructure, which doesn't exist yet...
* The clean way would be to use the firmware loader.
* But this code must be run before there is any userspace available.
* A static/init firmware infrastructure doesn't exist yet...
*/
if (vfs_stat(ramfs_dsdt_name, &stat) < 0) {
printk("not found.\n");
if (vfs_stat(ramfs_dsdt_name, &stat) < 0)
return ret;
}
len = stat.size;
/* check especially against empty files */
if (len <= 4) {
printk("error, file is too small: only %lu bytes.\n", len);
printk(KERN_ERR PREFIX "Failed: DSDT only %lu bytes.\n", len);
return ret;
}
firmware_file = filp_open(ramfs_dsdt_name, O_RDONLY, 0);
if (IS_ERR(firmware_file)) {
printk("error, could not open file %s.\n", ramfs_dsdt_name);
printk(KERN_ERR PREFIX "Failed to open %s.\n", ramfs_dsdt_name);
return ret;
}
dsdt_buffer = ACPI_ALLOCATE(len);
dsdt_buffer = kmalloc(len, GFP_ATOMIC);
if (!dsdt_buffer) {
printk("error when allocating %lu bytes of memory.\n", len);
printk(KERN_ERR PREFIX "Failed to allocate %lu bytes.\n", len);
goto err;
}
oldfs = get_fs();
set_fs(KERNEL_DS);
len2 = vfs_read(firmware_file, (char __user *)dsdt_buffer, len, &firmware_file->f_pos);
len2 = vfs_read(firmware_file, (char __user *)dsdt_buffer, len,
&firmware_file->f_pos);
set_fs(oldfs);
if (len2 < len) {
printk("error trying to read %lu bytes from %s.\n", len, ramfs_dsdt_name);
printk(KERN_ERR PREFIX "Failed to read %lu bytes from %s.\n",
len, ramfs_dsdt_name);
ACPI_FREE(dsdt_buffer);
goto err;
}
printk("successfully read %lu bytes from %s.\n", len, ramfs_dsdt_name);
printk(KERN_INFO PREFIX "Found %lu byte DSDT in %s.\n",
len, ramfs_dsdt_name);
ret = dsdt_buffer;
err:
filp_close(firmware_file, NULL);
@ -392,7 +393,9 @@ acpi_os_table_override(struct acpi_table_header * existing_table,
#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD
if ((strncmp(existing_table->signature, "DSDT", 4) == 0) &&
!acpi_no_initrd_override) {
struct acpi_table_header *initrd_table = acpi_find_dsdt_initrd();
struct acpi_table_header *initrd_table;
initrd_table = acpi_find_dsdt_initrd();
if (initrd_table)
*new_table = initrd_table;
}