From: Clemens Ladisch This patch removes several reads of a timer's config register that serve no purpose whatsoever. Signed-off-by: Clemens Ladisch Acked-by: Bob Picco Signed-off-by: Andrew Morton --- drivers/char/hpet.c | 4 ---- 1 files changed, 4 deletions(-) diff -puN drivers/char/hpet.c~hpet-remove-superfluous-register-reads drivers/char/hpet.c --- devel/drivers/char/hpet.c~hpet-remove-superfluous-register-reads 2005-09-28 22:50:06.000000000 -0700 +++ devel-akpm/drivers/char/hpet.c 2005-09-28 22:50:06.000000000 -0700 @@ -367,7 +367,6 @@ static int hpet_ioctl_ieon(struct hpet_d if (!devp->hd_ireqfreq) return -EIO; - v = readq(&timer->hpet_config); spin_lock_irq(&hpet_lock); if (devp->hd_flags & HPET_IE) { @@ -378,7 +377,6 @@ static int hpet_ioctl_ieon(struct hpet_d devp->hd_flags |= HPET_IE; spin_unlock_irq(&hpet_lock); - t = readq(&timer->hpet_config); irq = devp->hd_hdwirq; if (irq) { @@ -849,11 +847,9 @@ int hpet_alloc(struct hpet_data *hdp) } for (i = 0, devp = hpetp->hp_dev; i < hpetp->hp_ntimer; i++, devp++) { - unsigned long v; struct hpet_timer __iomem *timer; timer = &hpet->hpet_timers[devp - hpetp->hp_dev]; - v = readq(&timer->hpet_config); devp->hd_hpets = hpetp; devp->hd_hpet = hpet; _