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x86 idle floppy: deprecate disable_hlt()

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Plan to remove floppy_disable_hlt in 2012, an ancient
workaround with comments that it should be removed.

This allows us to remove clutter and a run-time branch
from the idle code.

WARN_ONCE() on invocation until it is removed.

cc: x86@kernel.org
cc: stable@kernel.org # .39.x
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2011-04-01 15:08:48 -04:00
parent 06ae40ce07
commit 3b70b2e5fc
2 changed files with 9 additions and 0 deletions
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8
Documentation/feature-removal-schedule.txt
View File

@ -6,6 +6,14 @@ be removed from this file.
--------------------------- ---------------------------
What: x86 floppy disable_hlt
When: 2012
Why: ancient workaround of dubious utility clutters the
code used by everybody else.
Who: Len Brown <len.brown@intel.com>
---------------------------
What: PRISM54 What: PRISM54
When: 2.6.34 When: 2.6.34

1
drivers/block/floppy.c
View File

@ -1038,6 +1038,7 @@ static void floppy_disable_hlt(void)
{ {
unsigned long flags; unsigned long flags;
WARN_ONCE(1, "floppy_disable_hlt() scheduled for removal in 2012");
spin_lock_irqsave(&floppy_hlt_lock, flags); spin_lock_irqsave(&floppy_hlt_lock, flags);
if (!hlt_disabled) { if (!hlt_disabled) {
hlt_disabled = 1; hlt_disabled = 1;