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fakekey: Simplify speakup_fake_key_pressed through this_cpu_ops

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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>
This commit is contained in:
Christoph Lameter 2010-12-06 11:16:26 -06:00 committed by Tejun Heo
parent b76834bc1b
commit 5309665dcc
1 changed files with 1 additions and 6 deletions
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7
drivers/staging/speakup/fakekey.c
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@ -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);
}