Signed-off-by: Finn Thain --- drivers/macintosh/nvram.c | 130 ---------------------------------------------- 1 file changed, 130 deletions(-) Index: linux/drivers/macintosh/nvram.c =================================================================== --- linux.orig/drivers/macintosh/nvram.c 2015-05-31 11:00:59.000000000 +1000 +++ /dev/null 1970-01-01 00:00:00.000000000 +0000 @@ -1,130 +0,0 @@ -/* - * /dev/nvram driver for Power Macintosh. - */ - -#define NVRAM_VERSION "1.0" - -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define NVRAM_SIZE 8192 - -static loff_t nvram_llseek(struct file *file, loff_t offset, int origin) -{ - switch (origin) { - case 0: - break; - case 1: - offset += file->f_pos; - break; - case 2: - offset += NVRAM_SIZE; - break; - default: - offset = -1; - } - if (offset < 0) - return -EINVAL; - - file->f_pos = offset; - return file->f_pos; -} - -static ssize_t read_nvram(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - unsigned int i; - char __user *p = buf; - - if (!access_ok(VERIFY_WRITE, buf, count)) - return -EFAULT; - if (*ppos >= NVRAM_SIZE) - return 0; - for (i = *ppos; count > 0 && i < NVRAM_SIZE; ++i, ++p, --count) - if (__put_user(nvram_read_byte(i), p)) - return -EFAULT; - *ppos = i; - return p - buf; -} - -static ssize_t write_nvram(struct file *file, const char __user *buf, - size_t count, loff_t *ppos) -{ - unsigned int i; - const char __user *p = buf; - char c; - - if (!access_ok(VERIFY_READ, buf, count)) - return -EFAULT; - if (*ppos >= NVRAM_SIZE) - return 0; - for (i = *ppos; count > 0 && i < NVRAM_SIZE; ++i, ++p, --count) { - if (__get_user(c, p)) - return -EFAULT; - nvram_write_byte(c, i); - } - *ppos = i; - return p - buf; -} - -static long nvram_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - switch(cmd) { - case PMAC_NVRAM_GET_OFFSET: - { - int part, offset; - if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0) - return -EFAULT; - if (part < pmac_nvram_OF || part > pmac_nvram_NR) - return -EINVAL; - offset = pmac_get_partition(part); - if (copy_to_user((void __user*)arg, &offset, sizeof(offset)) != 0) - return -EFAULT; - break; - } - - default: - return -EINVAL; - } - - return 0; -} - -const struct file_operations nvram_fops = { - .owner = THIS_MODULE, - .llseek = nvram_llseek, - .read = read_nvram, - .write = write_nvram, - .unlocked_ioctl = nvram_ioctl, -}; - -static struct miscdevice nvram_dev = { - NVRAM_MINOR, - "nvram", - &nvram_fops -}; - -int __init nvram_init(void) -{ - printk(KERN_INFO "Macintosh non-volatile memory driver v%s\n", - NVRAM_VERSION); - return misc_register(&nvram_dev); -} - -void __exit nvram_cleanup(void) -{ - misc_deregister( &nvram_dev ); -} - -module_init(nvram_init); -module_exit(nvram_cleanup); -MODULE_LICENSE("GPL");