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[3.16-stable,16/87] Input: joystick - use get_cycles on ARMv8

Message ID 20170505194745.3627137-17-arnd@arndb.de
State New
Headers show
Series build warnings and errors | expand

Commit Message

Arnd Bergmann May 5, 2017, 7:46 p.m. UTC 
From: Mark Brown <broonie@linaro.org>


Commit 13ba5d947a6790a0fdd36f49e7ca88d889acdacd upstream.

As with ARM the ARMv8 architecture provides a cycle counter which can be
used to provide a high resolution time for the joystick driver and
silence the build warning that results from not having a precise timer
on ARMv8, making allmodconfig and allyesconfig quieter.

Signed-off-by: Mark Brown <broonie@linaro.org>

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

---
 drivers/input/joystick/analog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.9.0
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Patch

diff --git a/drivers/input/joystick/analog.c b/drivers/input/joystick/analog.c
index 9135606c8649..ab0fdcd36e18 100644
--- a/drivers/input/joystick/analog.c
+++ b/drivers/input/joystick/analog.c
@@ -158,7 +158,7 @@  static unsigned int get_time_pit(void)
 #define GET_TIME(x)	rdtscl(x)
 #define DELTA(x,y)	((y)-(x))
 #define TIME_NAME	"TSC"
-#elif defined(__alpha__) || defined(CONFIG_MN10300) || defined(CONFIG_ARM) || defined(CONFIG_TILE)
+#elif defined(__alpha__) || defined(CONFIG_MN10300) || defined(CONFIG_ARM) || defined(CONFIG_ARM64) || defined(CONFIG_TILE)
 #define GET_TIME(x)	do { x = get_cycles(); } while (0)
 #define DELTA(x,y)	((y)-(x))
 #define TIME_NAME	"get_cycles"