From mboxrd@z Thu Jan 1 00:00:00 1970 From: Magnus Damm Date: Wed, 15 Apr 2009 10:50:04 +0000 Subject: [PATCH 01/05] clocksource: sh_cmt earlytimer support Message-Id: <20090415105004.29940.25791.sendpatchset@rx1.opensource.se> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org From: Magnus Damm Add Early Platform Driver support to the sh_cmt driver using the earlytimer class. Signed-off-by: Magnus Damm --- drivers/clocksource/sh_cmt.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) --- 0016/drivers/clocksource/sh_cmt.c +++ work/drivers/clocksource/sh_cmt.c 2009-01-22 17:30:35.000000000 +0900 @@ -567,9 +567,19 @@ static int sh_cmt_setup(struct sh_cmt_pr 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; @@ -577,7 +587,10 @@ static int __devinit sh_cmt_probe(struct 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); } @@ -607,6 +620,7 @@ 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);