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authorStuart Menefy <stuart.menefy@st.com>2009-08-24 18:18:50 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-08-24 18:18:50 +0900
commitbd4fb4d4c1e4a5a2ffbf57a83817a749df1339dd (patch)
tree994804b9290aeaea3113842e486c22fbec30cdc1 /arch/sh/lib
parent6d243dd37002bcee54841852ab1b8606fd457851 (diff)
downloadop-kernel-dev-bd4fb4d4c1e4a5a2ffbf57a83817a749df1339dd.zip
op-kernel-dev-bd4fb4d4c1e4a5a2ffbf57a83817a749df1339dd.tar.gz
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>
Diffstat (limited to 'arch/sh/lib')
-rw-r--r--arch/sh/lib/delay.c5
1 files changed, 3 insertions, 2 deletions
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 @@ 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)
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