[PATCH] x86, tsc: Remove checking cpu_has_tsc when CONFIG_X86_TSC=n.

[Rakib Mullick]

 When CONFIG_X86_TSC=n, we do not need to check cpu_has_tsc, we can
simply return with 0. Moreover cpu_has_tsc indicates whether cpu
tsc feature on or not, so it doesn't matter when CONFIG_X86_TSC=n.
Am I right? Or I'm missing anything?

----
Signed-off-by: Rakib Mullick <rakib.mullick@xxxxxxxxx>

--- linus/arch/x86/include/asm/tsc.h	2009-10-17 13:12:59.000000000 +0600
+++ rakib/arch/x86/include/asm/tsc.h	2009-10-30 21:55:29.000000000 +0600
@@ -24,8 +24,7 @@ static inline cycles_t get_cycles(void)
 	unsigned long long ret = 0;

 #ifndef CONFIG_X86_TSC
-	if (!cpu_has_tsc)
-		return 0;
+	return 0;
 #endif
 	rdtscll(ret);

@@ -39,8 +38,7 @@ static __always_inline cycles_t vget_cyc
 	 * access boot_cpu_data (which is not VDSO-safe):
 	 */
 #ifndef CONFIG_X86_TSC
-	if (!cpu_has_tsc)
-		return 0;
+	return 0;
 #endif
 	return (cycles_t)__native_read_tsc();
 }
--
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