From: Clemens Ladisch <[email protected]>
Fix a division by zero that happened when the HPET_INFO ioctl was
called before a timer frequency had been set.
Signed-off-by: Clemens Ladisch <[email protected]>
Index: linux-2.6.13/drivers/char/hpet.c
===================================================================
--- linux-2.6.13.orig/drivers/char/hpet.c 2005-10-03 22:53:12.000000000 +0200
+++ linux-2.6.13/drivers/char/hpet.c 2005-10-03 22:53:15.000000000 +0200
@@ -494,8 +494,11 @@ hpet_ioctl_common(struct hpet_dev *devp,
{
struct hpet_info info;
- info.hi_ireqfreq = hpet_time_div(hpetp,
- devp->hd_ireqfreq);
+ if (devp->hd_ireqfreq)
+ info.hi_ireqfreq =
+ hpet_time_div(hpetp, devp->hd_ireqfreq);
+ else
+ info.hi_ireqfreq = 0;
info.hi_flags =
readq(&timer->hpet_config) & Tn_PER_INT_CAP_MASK;
info.hi_hpet = devp->hd_hpets->hp_which;
-
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