Hello all! Has anyone else had this problem? I patch 2.6.8.1 with 2.6.9-rc3, 2.6.9-rc3-mm1, and vp-2.6.9-mm1-s8. My machine is an AMD64 3400+ laptop running FC3t1 and gcc-3.4.1-2 When I make I get: CC kernel/irq/autoprobe.o In file included from kernel/irq/autoprobe.c:9: include/linux/irq.h:78: error: syntax error before \"wait_queue_head_t\" include/linux/irq.h:78: warning: no semicolon at end of struct or union include/linux/irq.h:80: error: syntax error before \'}\' token include/linux/irq.h:80: warning: type defaults to `int\' in declaration of `irq_desc_t\' include/linux/irq.h:82: error: syntax error before \"irq_desc\" include/linux/irq.h:82: warning: type defaults to `int\' in declaration of `irq_desc\' include/linux/irq.h:82: warning: data definition has no type or storage class In file included from kernel/irq/autoprobe.c:9: include/linux/irq.h:92: error: syntax error before \"irq_desc_t\" include/linux/irq.h:92: warning: function declaration isn\'t a prototype include/linux/irq.h:93: error: syntax error before \"irq_desc_t\" include/linux/irq.h:93: warning: function declaration isn\'t a prototype kernel/irq/autoprobe.c: In function `probe_irq_on\': kernel/irq/autoprobe.c:30: error: `desc\' undeclared (first use in this function) kernel/irq/autoprobe.c:30: error: (Each undeclared identifier is reported only once kernel/irq/autoprobe.c:30: error: for each function it appears in.) kernel/irq/autoprobe.c:31: warning: ISO C90 forbids mixed declarations and code kernel/irq/autoprobe.c:42: error: request for member `action\' in something not a structure or union kernel/irq/autoprobe.c:43: error: request for member `handler\' in something not a structure or union kernel/irq/autoprobe.c:80: warning: ISO C90 forbids mixed declarations and code kernel/irq/autoprobe.c: In function `probe_irq_mask\': kernel/irq/autoprobe.c:121: error: `desc\' undeclared (first use in this function) kernel/irq/autoprobe.c:122: warning: ISO C90 forbids mixed declarations and code kernel/irq/autoprobe.c: In function `probe_irq_off\': kernel/irq/autoprobe.c:163: error: `desc\' undeclared (first use in this function) kernel/irq/autoprobe.c:164: warning: ISO C90 forbids mixed declarations and code make[2]: *** [kernel/irq/autoprobe.o] Error 1 make[1]: *** [kernel/irq] Error 2 make: *** [kernel] Error 2 I dont know what to do. Thanks for the help! -thewade