IT博客-驽马十驾-随笔分类-linuxhttp://www.cnitblog.com/ork/category/8015.html给我智慧，让我知道我真正的利益所在； 给我坚定的意志，让我能够按照智慧的引导行事zh-cnThu, 06 Oct 2011 14:53:26 GMTThu, 06 Oct 2011 14:53:26 GMT60scull例子程序，释放不了设备编号http://www.cnitblog.com/ork/archive/2009/06/29/59713.html驽马驽马Mon, 29 Jun 2009 09:41:00 GMThttp://www.cnitblog.com/ork/archive/2009/06/29/59713.htmlhttp://www.cnitblog.com/ork/comments/59713.htmlhttp://www.cnitblog.com/ork/archive/2009/06/29/59713.html#Feedback0http://www.cnitblog.com/ork/comments/commentRss/59713.htmlhttp://www.cnitblog.com/ork/services/trackbacks/59713.html #include dev_t scull_dev; int scull_major; int scull_minor; static int scull_init(void) { int ret = 0; ret = alloc_chrdev_region(&scull_dev, 0, 1,"scull"); if(ret){ printk(KERN_WARNING "error"); return ret; } scull_major = MAJOR(scull_dev); scull_minor = MINOR(scull_dev); printk(KERN_WARNING "alloc chrdev region %d %d", scull_major, scull_minor); return 0; } static void scull_exit(void) { printk(KERN_WARNING "unregister chrdev region %d %d",MAJOR(scull_dev),MINOR(scull_dev)); unregister_chrdev_region(scull_dev,0); } module_init(scull_init); module_exit(scull_exit); 卸载了模块后，cat /proc/devices 发现还有scull。 unregister_chrdev_region(scull_dev,0); <---------- 0改成1

驽马 2009-06-29 17:41 发表评论
]]>scull例子程序，释放不了设备编号http://www.cnitblog.com/ork/archive/2009/06/29/59714.html驽马驽马Mon, 29 Jun 2009 09:41:00 GMThttp://www.cnitblog.com/ork/archive/2009/06/29/59714.htmlhttp://www.cnitblog.com/ork/comments/59714.htmlhttp://www.cnitblog.com/ork/archive/2009/06/29/59714.html#Feedback0http://www.cnitblog.com/ork/comments/commentRss/59714.htmlhttp://www.cnitblog.com/ork/services/trackbacks/59714.html阅读全文

驽马 2009-06-29 17:41 发表评论
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