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Subject[RFC 20/24] char/generic_nvram: Remove as unused
And thus eliminate some twisted CONFIG_GENERIC_NVRAM logic.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>

---
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 <linux/module.h>
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/fcntl.h>
-#include <linux/init.h>
-#include <linux/mutex.h>
-#include <linux/nvram.h>
-#include <asm/uaccess.h>
-
-#ifdef CONFIG_PPC_PMAC
-#include <asm/nvram.h>
-#include <asm/machdep.h>
-#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");



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