diff options
| author | Magnus Damm <damm@igel.co.jp> | 2009-04-15 10:50:04 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-04-19 13:06:22 +0900 |
| commit | e475eedb09ee9a0fd855f3e923aa9af31c17d141 (patch) | |
| tree | 603e6c83531b613d4551e3a711c36ec864fea9fd /drivers/clocksource | |
| parent | aefe6475720bd5eb8aacbc881488f3aa65618562 (diff) | |
| download | lwn-e475eedb09ee9a0fd855f3e923aa9af31c17d141.tar.gz lwn-e475eedb09ee9a0fd855f3e923aa9af31c17d141.zip | |
clocksource: sh_cmt earlytimer support
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>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/sh_cmt.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c index 1c92c39a53aa..02bae3994abe 100644 --- a/drivers/clocksource/sh_cmt.c +++ b/drivers/clocksource/sh_cmt.c @@ -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); |