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>
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@ -25,6 +25,8 @@
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#include <linux/time.h>
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#include <linux/io.h>
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#include <linux/ioport.h>
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#include <linux/platform_device.h>
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#include <linux/ramoops.h>
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#define RAMOOPS_KERNMSG_HDR "===="
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#define RAMOOPS_HEADER_SIZE (5 + sizeof(struct timeval))
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@ -91,11 +93,17 @@ static void ramoops_do_dump(struct kmsg_dumper *dumper,
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cxt->count = (cxt->count + 1) % cxt->max_count;
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}
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static int __init ramoops_init(void)
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static int __init ramoops_probe(struct platform_device *pdev)
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{
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struct ramoops_platform_data *pdata = pdev->dev.platform_data;
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struct ramoops_context *cxt = &oops_cxt;
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int err = -EINVAL;
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if (pdata) {
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mem_size = pdata->mem_size;
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mem_address = pdata->mem_address;
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}
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if (!mem_size) {
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printk(KERN_ERR "ramoops: invalid size specification");
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goto fail3;
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@ -142,7 +150,7 @@ fail3:
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return err;
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}
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static void __exit ramoops_exit(void)
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static int __exit ramoops_remove(struct platform_device *pdev)
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{
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struct ramoops_context *cxt = &oops_cxt;
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@ -151,8 +159,26 @@ static void __exit ramoops_exit(void)
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iounmap(cxt->virt_addr);
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release_mem_region(cxt->phys_addr, cxt->size);
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return 0;
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}
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static struct platform_driver ramoops_driver = {
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.remove = __exit_p(ramoops_remove),
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.driver = {
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.name = "ramoops",
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.owner = THIS_MODULE,
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},
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};
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static int __init ramoops_init(void)
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{
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return platform_driver_probe(&ramoops_driver, ramoops_probe);
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}
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static void __exit ramoops_exit(void)
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{
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platform_driver_unregister(&ramoops_driver);
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}
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module_init(ramoops_init);
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module_exit(ramoops_exit);
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@ -0,0 +1,15 @@
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#ifndef __RAMOOPS_H
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#define __RAMOOPS_H
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/*
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* Ramoops platform data
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* @mem_size memory size for ramoops
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* @mem_address physical memory address to contain ramoops
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*/
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struct ramoops_platform_data {
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unsigned long mem_size;
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unsigned long mem_address;
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};
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#endif
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