sh: Fix underflow in SH udelay() code.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
git-mirror · Aug 24, 2009 · bd4fb4d · bd4fb4d
1 parent 6d243dd
commit bd4fb4d
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/arch/sh/lib/delay.c b/arch/sh/lib/delay.c
@@ -21,13 +21,14 @@ void __delay(unsigned long loops)
 
 inline void __const_udelay(unsigned long xloops)
 {
+	xloops *= 4;
 	__asm__("dmulu.l	%0, %2\n\t"
 		"sts	mach, %0"
 		: "=r" (xloops)
 		: "0" (xloops),
-		  "r" (HZ * cpu_data[raw_smp_processor_id()].loops_per_jiffy)
+		  "r" (cpu_data[raw_smp_processor_id()].loops_per_jiffy * (HZ/4))
 		: "macl", "mach");
-	__delay(xloops);
+	__delay(++xloops);
 }
 
 void __udelay(unsigned long usecs)