powerpc/hw_brk: Fix clearing of extraneous IRQ
authorMichael Neuling <mikey@neuling.org>
Mon, 24 Jun 2013 05:47:23 +0000 (15:47 +1000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Tue, 25 Jun 2013 07:24:40 +0000 (17:24 +1000)
commit540e07c67efe42ef6b6be4f1956931e676d58a15
tree03487074330b4e6988f0cbc0c8d5069ff3021140
parentb0b0aa9c7faf94e92320eabd8a1786c7747e40a8
powerpc/hw_brk: Fix clearing of extraneous IRQ

In 9422de3 "powerpc: Hardware breakpoints rewrite to handle non DABR breakpoint
registers" we changed the way we mark extraneous irqs with this:

- info->extraneous_interrupt = !((bp->attr.bp_addr <= dar) &&
- (dar - bp->attr.bp_addr < bp->attr.bp_len));
+ if (!((bp->attr.bp_addr <= dar) &&
+       (dar - bp->attr.bp_addr < bp->attr.bp_len)))
+ info->type |= HW_BRK_TYPE_EXTRANEOUS_IRQ;

Unfortunately this is bogus as it never clears extraneous IRQ if it's already
set.

This correctly clears extraneous IRQ before possibly setting it.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Reported-by: Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/kernel/hw_breakpoint.c