tree 5140d838f64e8494abd4942b4e2ddf2ddee69046
parent 1f2ea0837dbc263ce2a2512c4e73c83df68a6a55
author Ingo Molnar <mingo@elte.hu> 1171618104 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1171642440 -0800

[PATCH] genirq: do not mask interrupts by default

Never mask interrupts immediately upon request.  Disabling interrupts in
high-performance codepaths is rare, and on the other hand this change could
recover lost edges (or even other types of lost interrupts) by conservatively
only masking interrupts after they happen.  (NOTE: with this change the
highlevel irq-disable code still soft-disables this IRQ line - and if such an
interrupt happens then the IRQ flow handler keeps the IRQ masked.)

Mark i8529A controllers as 'never loses an edge'.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>