diff options
author | Finn Thain <fthain@telegraphics.com.au> | 2019-01-14 23:18:56 -0500 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-22 04:21:45 -0500 |
commit | 537f3286ad8fdd96e56a027160867ef092651353 (patch) | |
tree | 84ceab3cab5b28c6cb7e4f60e3c4c4ed9dad6f77 | |
parent | f9c3a570f5fc584f2ca2dd222d1b8c8537fc55f6 (diff) |
char/generic_nvram: Remove as unused
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r-- | drivers/char/Makefile | 6 | ||||
-rw-r--r-- | drivers/char/generic_nvram.c | 160 |
2 files changed, 1 insertions, 165 deletions
diff --git a/drivers/char/Makefile b/drivers/char/Makefile index b8d42b4e979b..fbea7dd12932 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile | |||
@@ -26,11 +26,7 @@ obj-$(CONFIG_RTC) += rtc.o | |||
26 | obj-$(CONFIG_HPET) += hpet.o | 26 | obj-$(CONFIG_HPET) += hpet.o |
27 | obj-$(CONFIG_EFI_RTC) += efirtc.o | 27 | obj-$(CONFIG_EFI_RTC) += efirtc.o |
28 | obj-$(CONFIG_XILINX_HWICAP) += xilinx_hwicap/ | 28 | obj-$(CONFIG_XILINX_HWICAP) += xilinx_hwicap/ |
29 | ifeq ($(CONFIG_GENERIC_NVRAM),y) | 29 | obj-$(CONFIG_NVRAM) += nvram.o |
30 | obj-$(CONFIG_NVRAM) += generic_nvram.o | ||
31 | else | ||
32 | obj-$(CONFIG_NVRAM) += nvram.o | ||
33 | endif | ||
34 | obj-$(CONFIG_TOSHIBA) += toshiba.o | 30 | obj-$(CONFIG_TOSHIBA) += toshiba.o |
35 | obj-$(CONFIG_DS1620) += ds1620.o | 31 | obj-$(CONFIG_DS1620) += ds1620.o |
36 | obj-$(CONFIG_HW_RANDOM) += hw_random/ | 32 | obj-$(CONFIG_HW_RANDOM) += hw_random/ |
diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c deleted file mode 100644 index 0c22b9503e84..000000000000 --- a/drivers/char/generic_nvram.c +++ /dev/null | |||
@@ -1,160 +0,0 @@ | |||
1 | /* | ||
2 | * Generic /dev/nvram driver for architectures providing some | ||
3 | * "generic" hooks, that is : | ||
4 | * | ||
5 | * nvram_read_byte, nvram_write_byte, nvram_sync, nvram_get_size | ||
6 | * | ||
7 | * Note that an additional hook is supported for PowerMac only | ||
8 | * for getting the nvram "partition" informations | ||
9 | * | ||
10 | */ | ||
11 | |||
12 | #define NVRAM_VERSION "1.1" | ||
13 | |||
14 | #include <linux/module.h> | ||
15 | |||
16 | #include <linux/types.h> | ||
17 | #include <linux/errno.h> | ||
18 | #include <linux/fs.h> | ||
19 | #include <linux/miscdevice.h> | ||
20 | #include <linux/fcntl.h> | ||
21 | #include <linux/init.h> | ||
22 | #include <linux/mutex.h> | ||
23 | #include <linux/nvram.h> | ||
24 | #include <linux/pagemap.h> | ||
25 | #include <linux/uaccess.h> | ||
26 | #include <asm/nvram.h> | ||
27 | #ifdef CONFIG_PPC_PMAC | ||
28 | #include <asm/machdep.h> | ||
29 | #endif | ||
30 | |||
31 | #define NVRAM_SIZE 8192 | ||
32 | |||
33 | static DEFINE_MUTEX(nvram_mutex); | ||
34 | static ssize_t nvram_len; | ||
35 | |||
36 | static loff_t nvram_llseek(struct file *file, loff_t offset, int origin) | ||
37 | { | ||
38 | return generic_file_llseek_size(file, offset, origin, | ||
39 | MAX_LFS_FILESIZE, nvram_len); | ||
40 | } | ||
41 | |||
42 | static ssize_t read_nvram(struct file *file, char __user *buf, | ||
43 | size_t count, loff_t *ppos) | ||
44 | { | ||
45 | unsigned int i; | ||
46 | char __user *p = buf; | ||
47 | |||
48 | if (!access_ok(buf, count)) | ||
49 | return -EFAULT; | ||
50 | if (*ppos >= nvram_len) | ||
51 | return 0; | ||
52 | for (i = *ppos; count > 0 && i < nvram_len; ++i, ++p, --count) | ||
53 | if (__put_user(nvram_read_byte(i), p)) | ||
54 | return -EFAULT; | ||
55 | *ppos = i; | ||
56 | return p - buf; | ||
57 | } | ||
58 | |||
59 | static ssize_t write_nvram(struct file *file, const char __user *buf, | ||
60 | size_t count, loff_t *ppos) | ||
61 | { | ||
62 | unsigned int i; | ||
63 | const char __user *p = buf; | ||
64 | char c; | ||
65 | |||
66 | if (!access_ok(buf, count)) | ||
67 | return -EFAULT; | ||
68 | if (*ppos >= nvram_len) | ||
69 | return 0; | ||
70 | for (i = *ppos; count > 0 && i < nvram_len; ++i, ++p, --count) { | ||
71 | if (__get_user(c, p)) | ||
72 | return -EFAULT; | ||
73 | nvram_write_byte(c, i); | ||
74 | } | ||
75 | *ppos = i; | ||
76 | return p - buf; | ||
77 | } | ||
78 | |||
79 | static int nvram_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | ||
80 | { | ||
81 | switch(cmd) { | ||
82 | #ifdef CONFIG_PPC_PMAC | ||
83 | case OBSOLETE_PMAC_NVRAM_GET_OFFSET: | ||
84 | printk(KERN_WARNING "nvram: Using obsolete PMAC_NVRAM_GET_OFFSET ioctl\n"); | ||
85 | case IOC_NVRAM_GET_OFFSET: { | ||
86 | int part, offset; | ||
87 | |||
88 | if (!machine_is(powermac)) | ||
89 | return -EINVAL; | ||
90 | if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0) | ||
91 | return -EFAULT; | ||
92 | if (part < pmac_nvram_OF || part > pmac_nvram_NR) | ||
93 | return -EINVAL; | ||
94 | offset = pmac_get_partition(part); | ||
95 | if (copy_to_user((void __user*)arg, &offset, sizeof(offset)) != 0) | ||
96 | return -EFAULT; | ||
97 | break; | ||
98 | } | ||
99 | #endif /* CONFIG_PPC_PMAC */ | ||
100 | case IOC_NVRAM_SYNC: | ||
101 | nvram_sync(); | ||
102 | break; | ||
103 | default: | ||
104 | return -EINVAL; | ||
105 | } | ||
106 | |||
107 | return 0; | ||
108 | } | ||
109 | |||
110 | static long nvram_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | ||
111 | { | ||
112 | int ret; | ||
113 | |||
114 | mutex_lock(&nvram_mutex); | ||
115 | ret = nvram_ioctl(file, cmd, arg); | ||
116 | mutex_unlock(&nvram_mutex); | ||
117 | |||
118 | return ret; | ||
119 | } | ||
120 | |||
121 | const struct file_operations nvram_fops = { | ||
122 | .owner = THIS_MODULE, | ||
123 | .llseek = nvram_llseek, | ||
124 | .read = read_nvram, | ||
125 | .write = write_nvram, | ||
126 | .unlocked_ioctl = nvram_unlocked_ioctl, | ||
127 | }; | ||
128 | |||
129 | static struct miscdevice nvram_dev = { | ||
130 | NVRAM_MINOR, | ||
131 | "nvram", | ||
132 | &nvram_fops | ||
133 | }; | ||
134 | |||
135 | int __init nvram_init(void) | ||
136 | { | ||
137 | int ret = 0; | ||
138 | |||
139 | printk(KERN_INFO "Generic non-volatile memory driver v%s\n", | ||
140 | NVRAM_VERSION); | ||
141 | ret = misc_register(&nvram_dev); | ||
142 | if (ret != 0) | ||
143 | goto out; | ||
144 | |||
145 | nvram_len = nvram_get_size(); | ||
146 | if (nvram_len < 0) | ||
147 | nvram_len = NVRAM_SIZE; | ||
148 | |||
149 | out: | ||
150 | return ret; | ||
151 | } | ||
152 | |||
153 | void __exit nvram_cleanup(void) | ||
154 | { | ||
155 | misc_deregister( &nvram_dev ); | ||
156 | } | ||
157 | |||
158 | module_init(nvram_init); | ||
159 | module_exit(nvram_cleanup); | ||
160 | MODULE_LICENSE("GPL"); | ||