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clocksource: sh_cmt earlytimer support

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Add Early Platform Driver support to the sh_cmt driver
using the earlytimer class.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2009-04-15 10:50:04 +00:00 committed by Paul Mundt
parent aefe647572
commit e475eedb09
1 changed files with 16 additions and 2 deletions
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18
drivers/clocksource/sh_cmt.c
View file

@ -566,9 +566,19 @@ static int sh_cmt_setup(struct sh_cmt_priv *p, struct platform_device *pdev)
static int __devinit sh_cmt_probe(struct platform_device *pdev)
{
struct sh_cmt_priv *p = platform_get_drvdata(pdev);
struct sh_cmt_config *cfg = pdev->dev.platform_data;
int ret;
p = kmalloc(sizeof(*p), GFP_KERNEL);
if (p) {
pr_info("sh_cmt: %s kept as earlytimer\n", cfg->name);
return 0;
}
if (is_early_platform_device(pdev))
p = alloc_bootmem(sizeof(*p));
else
p = kmalloc(sizeof(*p), GFP_KERNEL);
if (p == NULL) {
dev_err(&pdev->dev, "failed to allocate driver data\n");
return -ENOMEM;
@ -576,7 +586,10 @@ static int __devinit sh_cmt_probe(struct platform_device *pdev)
ret = sh_cmt_setup(p, pdev);
if (ret) {
kfree(p);
if (is_early_platform_device(pdev))
free_bootmem(__pa(p), sizeof(*p));
else
kfree(p);
platform_set_drvdata(pdev, NULL);
}
@ -606,6 +619,7 @@ static void __exit sh_cmt_exit(void)
platform_driver_unregister(&sh_cmt_device_driver);
}
early_platform_init("earlytimer", &sh_cmt_device_driver);
module_init(sh_cmt_init);
module_exit(sh_cmt_exit);