diff options
| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2009-04-02 20:01:21 +0400 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-05-14 16:50:27 +0400 |
| commit | 740ebe4a54fae1705705ec87ce511b16ffb50659 (patch) | |
| tree | f560d2d8d01c6c85108ad01ae244d5e9a4dcee25 /arch/mips/txx9/generic/setup_tx4938.c | |
| parent | 4f29c057aa81c5440f06b716f768ba9f8a041fe9 (diff) | |
| download | linux-740ebe4a54fae1705705ec87ce511b16ffb50659.tar.xz | |
MIPS: TXx9: Fix possible overflow in clock calculations
Addition of -fwrapv option in 2.6.29 discloses possible overflow with
signed arithmetics. For example, result of "a * 6 / 12" (int a =
400000000) is 200000000 without -fwrapv but -157913941 with -fwrapv.
Change some variable to unsigned to avoid such overflows.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/txx9/generic/setup_tx4938.c')
| -rw-r--r-- | arch/mips/txx9/generic/setup_tx4938.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/txx9/generic/setup_tx4938.c b/arch/mips/txx9/generic/setup_tx4938.c index f0844f891f0b..3925219b8973 100644 --- a/arch/mips/txx9/generic/setup_tx4938.c +++ b/arch/mips/txx9/generic/setup_tx4938.c @@ -93,7 +93,7 @@ void __init tx4938_setup(void) { int i; __u32 divmode; - int cpuclk = 0; + unsigned int cpuclk = 0; u64 ccfg; txx9_reg_res_init(TX4938_REV_PCODE(), TX4938_REG_BASE, |