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authorKyungmin Park <kyungmin.park@samsung.com>2010-10-27 15:34:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-27 18:03:18 -0700
commitc3b92ce9e75f6353104fc7f8e32fb9fdb2550ad0 (patch)
tree0b3086e8274eaff2741bdbb4199896597a0d9b57 /drivers/char/ramoops.c
parent5de1cb2d0f1c1e5475d2bedf65b76828f8cdde22 (diff)
downloadop-kernel-dev-c3b92ce9e75f6353104fc7f8e32fb9fdb2550ad0.zip
op-kernel-dev-c3b92ce9e75f6353104fc7f8e32fb9fdb2550ad0.tar.gz
ramoops: use the platform data structure instead of module params
As each board and system has different memory for ramoops. It's better to define the platform data instead of module params. [akpm@linux-foundation.org: fix ramoops_remove() return type] Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Marco Stornelli <marco.stornelli@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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 74f00b5..73dcb0e 100644
--- a/drivers/char/ramoops.c
+++ b/drivers/char/ramoops.c
@@ -25,6 +25,8 @@
#include <linux/time.h>
#include <linux/io.h>
#include <linux/ioport.h>
+#include <linux/platform_device.h>
+#include <linux/ramoops.h>
#define RAMOOPS_KERNMSG_HDR "===="
#define RAMOOPS_HEADER_SIZE (5 + sizeof(struct timeval))
@@ -91,11 +93,17 @@ static void ramoops_do_dump(struct kmsg_dumper *dumper,
cxt->count = (cxt->count + 1) % cxt->max_count;
}
-static int __init ramoops_init(void)
+static int __init ramoops_probe(struct platform_device *pdev)
{
+ struct ramoops_platform_data *pdata = pdev->dev.platform_data;
struct ramoops_context *cxt = &oops_cxt;
int err = -EINVAL;
+ if (pdata) {
+ mem_size = pdata->mem_size;
+ mem_address = pdata->mem_address;
+ }
+
if (!mem_size) {
printk(KERN_ERR "ramoops: invalid size specification");
goto fail3;
@@ -142,7 +150,7 @@ fail3:
return err;
}
-static void __exit ramoops_exit(void)
+static int __exit ramoops_remove(struct platform_device *pdev)
{
struct ramoops_context *cxt = &oops_cxt;
@@ -151,8 +159,26 @@ static void __exit ramoops_exit(void)
iounmap(cxt->virt_addr);
release_mem_region(cxt->phys_addr, cxt->size);
+ return 0;
}
+static struct platform_driver ramoops_driver = {
+ .remove = __exit_p(ramoops_remove),
+ .driver = {
+ .name = "ramoops",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init ramoops_init(void)
+{
+ return platform_driver_probe(&ramoops_driver, ramoops_probe);
+}
+
+static void __exit ramoops_exit(void)
+{
+ platform_driver_unregister(&ramoops_driver);
+}
module_init(ramoops_init);
module_exit(ramoops_exit);
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