From abbf268ae8f51e19779cdf3f5fbb8144f1a5fbc3 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 5 Nov 2005 21:22:13 +0000 Subject: [PATCH] [DRIVER MODEL] Fix gbefb Statically allocated devices in module data is a potential cause of oopsen. The device may be in use by a userspace process, which will keep a reference to the device. If the module is unloaded, the module data will be freed. Subsequent use of the platform device will cause a kernel oops. Use generic platform device allocation/release code in modules. Signed-off-by: Russell King Acked-by: Greg Kroah-Hartman --- drivers/video/gbefb.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/video/gbefb.c b/drivers/video/gbefb.c index 316bfe9948..ed853bef19 100644 --- a/drivers/video/gbefb.c +++ b/drivers/video/gbefb.c @@ -1260,24 +1260,30 @@ static struct device_driver gbefb_driver = { .remove = __devexit_p(gbefb_remove), }; -static struct platform_device gbefb_device = { - .name = "gbefb", -}; +static struct platform_device *gbefb_device; int __init gbefb_init(void) { int ret = driver_register(&gbefb_driver); if (!ret) { - ret = platform_device_register(&gbefb_device); - if (ret) + gbefb_device = platform_device_alloc("gbefb", 0); + if (gbefb_device) { + ret = platform_device_add(gbefb_device); + } else { + ret = -ENOMEM; + } + if (ret) { + platform_device_put(gbefb_device); driver_unregister(&gbefb_driver); + } } return ret; } void __exit gbefb_exit(void) { - driver_unregister(&gbefb_driver); + platform_device_unregister(gbefb_device); + driver_unregister(&gbefb_driver); } module_init(gbefb_init); -- 2.39.5