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[PATCH] hpet: remove superfluous register reads 

This patch removes several reads of a timer's config register that serve no
purpose whatsoever.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Acked-by: Bob Picco <bob.picco@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Clemens Ladisch 2005-10-30 15:03:32 -08:00 committed by Linus Torvalds
parent 642d30bbc7
commit 3f992e1bb7
1 changed files with 0 additions and 4 deletions
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4
drivers/char/hpet.c
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@ -367,7 +367,6 @@ static int hpet_ioctl_ieon(struct hpet_dev *devp)
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_dev *devp)
devp->hd_flags |= HPET_IE;
spin_unlock_irq(&hpet_lock);
t = readq(&timer->hpet_config);
irq = devp->hd_hdwirq;
if (irq) {
@ -855,11 +853,9 @@ 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;