From: Clemens Ladisch <clemens@ladisch.de>
Date: Sun, 30 Oct 2005 23:03:33 +0000 (-0800)
Subject: [PATCH] hpet: allow non-power-of-two frequencies
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=189e2dd1376c1eb2f3a717a15f1ed8c7d0b3811a;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] hpet: allow non-power-of-two frequencies

It was only the RTC hardware that restricted interrupt frequencies to a power
of two.  There is no reason to take over this restriction into the HPET
driver, so remove the offending check.

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>
---

diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index e3c7c0096e17..85d39ff286c4 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -519,7 +519,7 @@ hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, int kernel)
 			break;
 		}
 
-		if (!arg || (arg & (arg - 1))) {
+		if (!arg) {
 			err = -EINVAL;
 			break;
 		}