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>

diff --git a/Documentation/timers/hpet.txt b/Documentation/timers/hpet.txt
index 767392ffd31e1451aa14da7453fc581264b4491c..a484d2c109d7ff0689d8997c04ce477ca6e79d1c 100644 (file)
--- 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 ab2ed5328f0a87c976a7fbbea31cc018d4a9c29d..c46662f64c392050d1c45b722e3de7c01f87e250 100644 (file)
--- 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 240b6cf1d97c66fc828f97df90726cb64d500fba..be54e5331a4517899e0e4ace0c48418cbb082a0e 100644 (file)
--- 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)