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authorLen Brown <len.brown@intel.com>2011-04-01 23:08:48 +0400
committerLen Brown <len.brown@intel.com>2011-05-29 11:39:15 +0400
commit3b70b2e5fcf6315eb833a1bcc2b810bdc75484ff (patch)
tree803b88453cf6be96b81727105b67bb7566cf7b48
parent06ae40ce073daf233607a3c54a489f2c1e44683e (diff)
downloadlinux-3b70b2e5fcf6315eb833a1bcc2b810bdc75484ff.tar.xz
x86 idle floppy: deprecate disable_hlt()
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>
-rw-r--r--Documentation/feature-removal-schedule.txt8
-rw-r--r--drivers/block/floppy.c1
2 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index b3f35e5f9c95..5540615ac26c 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -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
When: 2.6.34
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 77fc76f8aea9..20aea9b511b5 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -1038,6 +1038,7 @@ static void floppy_disable_hlt(void)
{
unsigned long flags;
+ WARN_ONCE(1, "floppy_disable_hlt() scheduled for removal in 2012");
spin_lock_irqsave(&floppy_hlt_lock, flags);
if (!hlt_disabled) {
hlt_disabled = 1;