From: Christoph Lameter <cl@linux.com>
Date: Mon, 6 Dec 2010 17:16:26 +0000 (-0600)
Subject: fakekey: Simplify speakup_fake_key_pressed through this_cpu_ops
X-Git-Tag: v2.6.38-rc1~455^2~19
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5309665dcc1143d659d82568da8d00f0e08a58f9;p=karo-tx-linux.git

fakekey: Simplify speakup_fake_key_pressed through this_cpu_ops

The whole function can be expressed as a simple this_cpu_read() operation.
The function overhead is now likely multiple times that of the single
instruction that is executed in it.

Sedat: fixed compile failure caused by an extra ')'.

Cc: William Hubbs <w.d.hubbs@gmail.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
---

diff --git a/drivers/staging/speakup/fakekey.c b/drivers/staging/speakup/fakekey.c
index bf4ec68ac2eb..1b34a8771641 100644
--- a/drivers/staging/speakup/fakekey.c
+++ b/drivers/staging/speakup/fakekey.c
@@ -95,10 +95,5 @@ void speakup_fake_down_arrow(void)
 	 */
 bool speakup_fake_key_pressed(void)
 {
-	bool is_pressed;
-
-	is_pressed = get_cpu_var(reporting_keystroke);
-	put_cpu_var(reporting_keystroke);
-
-	return is_pressed;
+	return this_cpu_read(reporting_keystroke);
 }