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authorMichael S. Tsirkin <mst@redhat.com>2016-02-11 01:05:01 +0200
committerIngo Molnar <mingo@kernel.org>2016-02-17 09:39:56 +0100
commit4e7f9df25874cedbbc604a5c5c2e7a6efe662387 (patch)
treeeeac2e470c9f0c11934fafe8d6b3d3eda31120c9
parenta82eee7424525e34e98d821dd059ce14560a1e35 (diff)
downloadlinux-4e7f9df25874cedbbc604a5c5c2e7a6efe662387.tar.bz2
hpet: Drop stale URLs
Looks like the HPET spec at intel.com got moved. It isn't hard to find so drop the link, just mention the revision assumed. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: linux-doc@vger.kernel.org Link: http://lkml.kernel.org/r/1455145462-3877-1-git-send-email-mst@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--Documentation/timers/hpet.txt4
-rw-r--r--arch/x86/Kconfig4
-rw-r--r--drivers/char/hpet.c2
3 files changed, 4 insertions, 6 deletions
diff --git a/Documentation/timers/hpet.txt b/Documentation/timers/hpet.txt
index 767392ffd31e..a484d2c109d7 100644
--- a/Documentation/timers/hpet.txt
+++ b/Documentation/timers/hpet.txt
@@ -1,9 +1,7 @@
High Precision Event Timer Driver for Linux
The High Precision Event Timer (HPET) hardware follows a specification
-by Intel and Microsoft which can be found at
-
- http://www.intel.com/hardwaredesign/hpetspec_1.pdf
+by Intel and Microsoft, revision 1.
Each HPET has one fixed-rate counter (at 10+ MHz, hence "High Precision")
and up to 32 comparators. Normally three or more comparators are provided,
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ab2ed5328f0a..c46662f64c39 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -778,8 +778,8 @@ config HPET_TIMER
HPET is the next generation timer replacing legacy 8254s.
The HPET provides a stable time base on SMP
systems, unlike the TSC, but it is more expensive to access,
- as it is off-chip. You can find the HPET spec at
- <http://www.intel.com/hardwaredesign/hpetspec_1.pdf>.
+ as it is off-chip. The interface used is documented
+ in the HPET spec, revision 1.
You can safely choose Y here. However, HPET will only be
activated if the platform and the BIOS support this feature.
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 240b6cf1d97c..be54e5331a45 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -42,7 +42,7 @@
/*
* The High Precision Event Timer driver.
* This driver is closely modelled after the rtc.c driver.
- * http://www.intel.com/hardwaredesign/hpetspec_1.pdf
+ * See HPET spec revision 1.
*/
#define HPET_USER_FREQ (64)
#define HPET_DRIFT (500)