And thus eliminate some twisted CONFIG_GENERIC_NVRAM logic. Signed-off-by: Finn Thain --- drivers/char/Makefile | 6 - drivers/char/generic_nvram.c | 176 ------------------------------------------- 2 files changed, 1 insertion(+), 181 deletions(-) Index: linux/drivers/char/Makefile =================================================================== --- linux.orig/drivers/char/Makefile 2015-05-31 11:00:59.000000000 +1000 +++ linux/drivers/char/Makefile 2015-05-31 11:01:23.000000000 +1000 @@ -30,11 +30,7 @@ obj-$(CONFIG_GEN_RTC) += genrtc.o obj-$(CONFIG_EFI_RTC) += efirtc.o obj-$(CONFIG_DS1302) += ds1302.o obj-$(CONFIG_XILINX_HWICAP) += xilinx_hwicap/ -ifeq ($(CONFIG_GENERIC_NVRAM),y) - obj-$(CONFIG_NVRAM) += generic_nvram.o -else - obj-$(CONFIG_NVRAM) += nvram.o -endif +obj-$(CONFIG_NVRAM) += nvram.o obj-$(CONFIG_TOSHIBA) += toshiba.o obj-$(CONFIG_I8K) += i8k.o obj-$(CONFIG_DS1620) += ds1620.o Index: linux/drivers/char/generic_nvram.c =================================================================== --- linux.orig/drivers/char/generic_nvram.c 2015-05-31 11:01:19.000000000 +1000 +++ /dev/null 1970-01-01 00:00:00.000000000 +0000 @@ -1,176 +0,0 @@ -/* - * Generic /dev/nvram driver for architectures providing some - * "generic" hooks, that is : - * - * nvram_read_byte, nvram_write_byte, nvram_sync, nvram_get_size - * - * Note that an additional hook is supported for PowerMac only - * for getting the nvram "partition" informations - * - */ - -#define NVRAM_VERSION "1.1" - -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifdef CONFIG_PPC_PMAC -#include -#include -#endif - -static DEFINE_MUTEX(nvram_mutex); -static ssize_t nvram_len; - -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_len; - 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_len) - return 0; - for (i = *ppos; count > 0 && i < nvram_len; ++i, ++p, --count) - if (__put_user(arch_nvram_ops.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_len) - return 0; - for (i = *ppos; count > 0 && i < nvram_len; ++i, ++p, --count) { - if (__get_user(c, p)) - return -EFAULT; - arch_nvram_ops.write_byte(c, i); - } - *ppos = i; - return p - buf; -} - -static int nvram_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - switch(cmd) { -#ifdef CONFIG_PPC_PMAC - case OBSOLETE_PMAC_NVRAM_GET_OFFSET: - printk(KERN_WARNING "nvram: Using obsolete PMAC_NVRAM_GET_OFFSET ioctl\n"); - case IOC_NVRAM_GET_OFFSET: { - int part, offset; - - if (!machine_is(powermac)) - return -EINVAL; - 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; - } -#endif /* CONFIG_PPC_PMAC */ - case IOC_NVRAM_SYNC: - arch_nvram_ops.sync(); - break; - default: - return -EINVAL; - } - - return 0; -} - -static long nvram_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - int ret; - - mutex_lock(&nvram_mutex); - ret = nvram_ioctl(file, cmd, arg); - mutex_unlock(&nvram_mutex); - - return ret; -} - -const struct file_operations nvram_fops = { - .owner = THIS_MODULE, - .llseek = nvram_llseek, - .read = read_nvram, - .write = write_nvram, - .unlocked_ioctl = nvram_unlocked_ioctl, -}; - -static struct miscdevice nvram_dev = { - NVRAM_MINOR, - "nvram", - &nvram_fops -}; - -int __init nvram_init(void) -{ - int ret; - - if (arch_nvram_ops.get_size == NULL) - return -ENODEV; - - nvram_len = arch_nvram_ops.get_size(); - if (nvram_len < 0) - return nvram_len; - - ret = misc_register(&nvram_dev); - if (ret) - return ret; - - pr_info("Generic non-volatile memory driver v%s\n", NVRAM_VERSION); - - return 0; -} - -void __exit nvram_cleanup(void) -{ - misc_deregister( &nvram_dev ); -} - -module_init(nvram_init); -module_exit(nvram_cleanup); -MODULE_LICENSE("GPL"); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/