'err()' and 'info()' problems in usb.c?

cd7809 · 02-22-2004, 09:27 PM

When I read the usb.c, I can not find out which header file include and realize the 'err()' and 'info()' functions, so anybody can tell me which header file 'err()' and 'info()' locate?

Any form of your help will be appreciated, thanks!

jtshaw · 02-22-2004, 09:33 PM

They are in include/linux/usb.h in the source tree.....

Code:

#define err(format, arg...) printk(KERN_ERR "%s: " format "\n" , __FILE__ , ## arg)
#define info(format, arg...) printk(KERN_INFO "%s: " format "\n" , __FILE__ , ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n" , __FILE__ , ## arg)

cd7809 · 02-22-2004, 10:39 PM

very thanks!!!

shishir · 02-23-2004, 04:36 AM

you know ..while getting people to solve the problems by putting exact answers here is the easy way out, it would be better if you tried doing a little research, it is a lot more satisfying when you locate the solutions with your own effort, trust me on that....

and there is no knowing what else you might end up knowing cos of your efforts..

this is again from my personal experience...

try to use a lot of code browser tools, like ctags, and cscope, or if you are a GUI freak, Source Navigator, would do your knowledge a world of good...

these tools are there to help you out when you are stuck...

then, there is a linux code cross reference site that you can always goto to look for what you are looking for.

i understand that you are a newbie and welcome to the forum...
..
hope i have helped

jtshaw · 02-23-2004, 06:24 AM

And you forgot the most useful tool of all, grep

That is how I found it

cd7809 · 03-04-2004, 08:58 PM

Thanks shishir, and thanks jtshaw!