Pavel Machek wrote:
Hi!
Fix this warning:
powernow-k8.c: In function ?query_current_values_with_pending_wait?:
powernow-k8.c:110: warning: ?hi? may be used uninitialized in this
function
Are you sure?
Original code is clearly buggy; I do not think you need that ugly do
{} while loop.
I'm not sure why you think the loop is ugly. It makes it more obvious
(to us humans and the compiler) that the loop is executed at least one time.
Pavel
Signed-off-by: Brian Gerst <[email protected]>
diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
--- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
@@ -110,14 +110,13 @@ static int query_current_values_with_pen
u32 lo, hi;
u32 i = 0;
- lo = MSR_S_LO_CHANGE_PENDING;
- while (lo & MSR_S_LO_CHANGE_PENDING) {
+ do {
if (i++ > 0x1000000) {
printk(KERN_ERR PFX "detected change pending stuck\n");
return 1;
}
rdmsr(MSR_FIDVID_STATUS, lo, hi);
- }
+ } while (lo & MSR_S_LO_CHANGE_PENDING);
data->currvid = hi & MSR_S_HI_CURRENT_VID;
data->currfid = lo & MSR_S_LO_CURRENT_FID;
-
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