[PATCH] cpufreq: make gcc-2.91.66 happy (Was: Re: [PATCH 2.5.54] cpufreq: update timer notifier)

[Dominik Brodowski <linux@brodo.de>]

This patch updates the cpufreq #defines so that gcc-2.91.66 should
work happily with cpufreq.

On Mon, Jan 06, 2003 at 01:34:31PM -0800, Andrew Morton wrote:
> Dominik Brodowski wrote:
> > 
> > +#else
> > +#define adjust_jiffies(...)
> > +#endif
> 
> This will fail to compile on gcc-2.91.66.  It's OK on 2.95.3.
> 
> sparc64 requires a compiler of similar vintage (2.92.11), so
> I am trying to keep 2.91.66-on-x86 limping along so that breakage
> can be detected more easily.
> 
> Please use
> 
> 	#define adjust_jiffies(x...) do {} while (0)
> 
> here.   Or an empty inline, which tends to be nicer, because you
> still get argument type checking.

diff -ruN linux-original/kernel/cpufreq.c linux/kernel/cpufreq.c
--- linux-original/kernel/cpufreq.c	2003-01-06 23:27:59.000000000 +0100
+++ linux/kernel/cpufreq.c	2003-01-06 23:29:49.000000000 +0100
@@ -734,8 +734,8 @@
 }
 
 #else
-#define cpufreq_sysctl_init()
-#define cpufreq_sysctl_exit()
+#define cpufreq_sysctl_init() do {} while(0)
+#define cpufreq_sysctl_exit() do {} while(0)
 #endif /* CONFIG_SYSCTL */
 #endif /* CONFIG_CPU_FREQ_24_API */
 
@@ -946,7 +946,7 @@
 		loops_per_jiffy = cpufreq_scale(l_p_j_ref, l_p_j_ref_freq, ci->new);
 }
 #else
-#define adjust_jiffies(...)
+#define adjust_jiffies(x...) do {} while (0)
 #endif
 
 
@@ -1131,6 +1131,6 @@
 }
 EXPORT_SYMBOL_GPL(cpufreq_restore);
 #else
-#define cpufreq_restore()
+#define cpufreq_restore() do {} while (0)
 #endif /* CONFIG_PM */