Weekly summary of kernel list activity (much easier to read)
http://www.kerneltraffic.org/kernel-traffic/
+LWN.net:
+ Weekly summary of kernel development activity - http://lwn.net/
+ 2.6 driver porting information:
+ http://lwn.net/Articles/driver-porting/
+
+KernelTrap:
+ Occasional Linux kernel articles and developer interviews
+ http://kerneltrap.org/
+
+KernelNewbies:
+ Documentation and assistance for new kernel programmers
+ http://kernelnewbies.org/
+
Linux USB project:
http://sourceforge.net/projects/linux-usb/