Madhukar G wrote: > Hi All, > > I'm using kernel version 2.6.28 for debugging USB stack for Mass > Storage Device. I have added some debug messages in storage, host and > core modules. When i compiled using "make modules", usbcore.ko was > never created. Also, i found that usbcore.ko is not included in > modules.dep file. > > Is usbcore.ko merged with other modules. Also, the debug message which > i added in core never appeared. How can i see the debug messages which > are added in core? No, it's built as a loadable module named usbcore.ko. That works for me on 2.6.28. Are you sure that you loaded/ran the correct (modified) module? You may need to use printk facility levels from include/linux/kernel.h: #define KERN_EMERG "<0>" /* system is unusable */ #define KERN_ALERT "<1>" /* action must be taken immediately */ #define KERN_CRIT "<2>" /* critical conditions */ #define KERN_ERR "<3>" /* error conditions */ #define KERN_WARNING "<4>" /* warning conditions */ #define KERN_NOTICE "<5>" /* normal but significant condition */ #define KERN_INFO "<6>" /* informational */ #define KERN_DEBUG "<7>" /* debug-level messages */ and/or boot with ignore_loglevel on the kernel boot command line. The latter will print all messages regardless of their log (facility) level. ~Randy -- ~Randy -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html