From 3f992e1bb7eab7b7af2b9ea46d2b80b1fed84845 Mon Sep 17 00:00:00 2001
From: Clemens Ladisch <clemens@ladisch.de>
Date: Sun, 30 Oct 2005 15:03:32 -0800
Subject: [PATCH] [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>
---
drivers/char/hpet.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index bf2f5a51c68..e3c7c0096e1 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -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;
--
2.41.3