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x86/tsc: Remove redundant assignment

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Previously, the assignment to the local variable 'now' took place
before the for loop. The loop is unconditional so it will be entered
at least once. The variable 'now' is reassigned in the loop and is not
used before reassigning. Therefore, the assignment before the loop is
unnecessary and can be removed.

No code changed:

  # arch/x86/kernel/tsc_sync.o:

   text    data     bss     dec     hex filename
   3569     198      44    3811     ee3 tsc_sync.o.before
   3569     198      44    3811     ee3 tsc_sync.o.after

md5:
   36216de29b208edbcd34fed9fe7f7b69  tsc_sync.o.before.asm
   36216de29b208edbcd34fed9fe7f7b69  tsc_sync.o.after.asm

 [ bp: Massage commit message. ]

Signed-off-by: Mateusz Nosek <mateusznosek0@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200118171143.25178-1-mateusznosek0@gmail.com
This commit is contained in:
Mateusz Nosek 2020-01-18 18:11:43 +01:00 committed by Borislav Petkov
parent 1429b568ad
commit 4144fddbd3
1 changed files with 0 additions and 1 deletions
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arch/x86/kernel/tsc_sync.c
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@ -233,7 +233,6 @@ static cycles_t check_tsc_warp(unsigned int timeout)
* The measurement runs for 'timeout' msecs:
*/
end = start + (cycles_t) tsc_khz * timeout;
now = start;
for (i = 0; ; i++) {
/*