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path: root/drivers/char/ramoops.c
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Diffstat (limited to 'drivers/char/ramoops.c')
-rw-r--r--drivers/char/ramoops.c30
1 files changed, 28 insertions, 2 deletions
diff --git a/drivers/char/ramoops.c b/drivers/char/ramoops.c
index 74f00b5ffa36..73dcb0ee41fd 100644
--- a/drivers/char/ramoops.c
+++ b/drivers/char/ramoops.c
@@ -25,6 +25,8 @@
25#include <linux/time.h> 25#include <linux/time.h>
26#include <linux/io.h> 26#include <linux/io.h>
27#include <linux/ioport.h> 27#include <linux/ioport.h>
28#include <linux/platform_device.h>
29#include <linux/ramoops.h>
28 30
29#define RAMOOPS_KERNMSG_HDR "====" 31#define RAMOOPS_KERNMSG_HDR "===="
30#define RAMOOPS_HEADER_SIZE (5 + sizeof(struct timeval)) 32#define RAMOOPS_HEADER_SIZE (5 + sizeof(struct timeval))
@@ -91,11 +93,17 @@ static void ramoops_do_dump(struct kmsg_dumper *dumper,
91 cxt->count = (cxt->count + 1) % cxt->max_count; 93 cxt->count = (cxt->count + 1) % cxt->max_count;
92} 94}
93 95
94static int __init ramoops_init(void) 96static int __init ramoops_probe(struct platform_device *pdev)
95{ 97{
98 struct ramoops_platform_data *pdata = pdev->dev.platform_data;
96 struct ramoops_context *cxt = &oops_cxt; 99 struct ramoops_context *cxt = &oops_cxt;
97 int err = -EINVAL; 100 int err = -EINVAL;
98 101
102 if (pdata) {
103 mem_size = pdata->mem_size;
104 mem_address = pdata->mem_address;
105 }
106
99 if (!mem_size) { 107 if (!mem_size) {
100 printk(KERN_ERR "ramoops: invalid size specification"); 108 printk(KERN_ERR "ramoops: invalid size specification");
101 goto fail3; 109 goto fail3;
@@ -142,7 +150,7 @@ fail3:
142 return err; 150 return err;
143} 151}
144 152
145static void __exit ramoops_exit(void) 153static int __exit ramoops_remove(struct platform_device *pdev)
146{ 154{
147 struct ramoops_context *cxt = &oops_cxt; 155 struct ramoops_context *cxt = &oops_cxt;
148 156
@@ -151,8 +159,26 @@ static void __exit ramoops_exit(void)
151 159
152 iounmap(cxt->virt_addr); 160 iounmap(cxt->virt_addr);
153 release_mem_region(cxt->phys_addr, cxt->size); 161 release_mem_region(cxt->phys_addr, cxt->size);
162 return 0;
154} 163}
155 164
165static struct platform_driver ramoops_driver = {
166 .remove = __exit_p(ramoops_remove),
167 .driver = {
168 .name = "ramoops",
169 .owner = THIS_MODULE,
170 },
171};
172
173static int __init ramoops_init(void)
174{
175 return platform_driver_probe(&ramoops_driver, ramoops_probe);
176}
177
178static void __exit ramoops_exit(void)
179{
180 platform_driver_unregister(&ramoops_driver);
181}
156 182
157module_init(ramoops_init); 183module_init(ramoops_init);
158module_exit(ramoops_exit); 184module_exit(ramoops_exit);