[tip:x86/asm] x86/asm/tsc, drivers/input/gameport: Replace rdtscl () with native_read_tsc()

tip-bot for Andy Lutomirski
2015-07-06T15:44:18Z

Commit-ID: 732f374ba50b64150bf954c2d4e9f6fae583cccf
Gitweb: http://git.kernel.org/tip/732f374ba50b64150bf954c2d4e9f6fae583cccf
Author: Andy Lutomirski <luto@kernel.org>
AuthorDate: Thu, 25 Jun 2015 18:44:05 +0200
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Mon, 6 Jul 2015 15:23:28 +0200

x86/asm/tsc, drivers/input/gameport: Replace rdtscl() with native_read_tsc()

It's unclear to me why this code exists in the first place.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kvm ML <kvm@vger.kernel.org>
Cc: linux-input@vger.kernel.org
Link: http://lkml.kernel.org/r/9e058e72f4cf1f13c6483c1360b39c3d188a2c2a.1434501121.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
drivers/input/gameport/gameport.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c
index e853a21..abc0cb2 100644
--- a/drivers/input/gameport/gameport.c
+++ b/drivers/input/gameport/gameport.c
@@ -149,9 +149,9 @@ static int old_gameport_measure_speed(struct gameport *gameport)

for(i = 0; i < 50; i++) {
local_irq_save(flags);
- rdtscl(t1);
+ t1 = native_read_tsc();
for (t = 0; t < 50; t++) gameport_read(gameport);
- rdtscl(t2);
+ t2 = native_read_tsc();
local_irq_restore(flags);
udelay(i * 10);
if (t2 - t1 < tx) tx = t2 - t1;