--- zzzz-none-000/linux-2.6.19.2/include/asm-x86_64/pda.h	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/include/asm-x86_64/pda.h	2007-01-11 07:38:19.000000000 +0000
@@ -109,15 +109,6 @@
 #define sub_pda(field,val) pda_to_op("sub",field,val)
 #define or_pda(field,val) pda_to_op("or",field,val)
 
-/* This is not atomic against other CPUs -- CPU preemption needs to be off */
-#define test_and_clear_bit_pda(bit,field) ({		\
-	int old__;						\
-	asm volatile("btr %2,%%gs:%c3\n\tsbbl %0,%0"		\
-	    : "=r" (old__), "+m" (_proxy_pda.field) 		\
-	    : "dIr" (bit), "i" (pda_offset(field)) : "memory");	\
-	old__;							\
-})
-
 #endif
 
 #define PDA_STACKOFFSET (5*8)