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>
diff --git a/arch/sh/lib/delay.c b/arch/sh/lib/delay.c
index f3ddd21..faa8f86 100644
--- a/arch/sh/lib/delay.c
+++ b/arch/sh/lib/delay.c
@@ -21,13 +21,14 @@
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)
