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authorMatthew McClintock <msm@freescale.com>2010-09-16 17:58:23 -0500
committerKumar Gala <galak@kernel.crashing.org>2010-10-14 00:52:46 -0500
commitc71635d288ffd3bcdfb30308f681f9af34f0fc81 (patch)
treef3bbfcb3c81b85bf3dc228a7685d093a5ac2760d /arch/powerpc/kernel/machine_kexec.c
parentfbdd7144ceadd578bc2a875af1dabd67e80ba0d0 (diff)
downloadop-kernel-dev-c71635d288ffd3bcdfb30308f681f9af34f0fc81.zip
op-kernel-dev-c71635d288ffd3bcdfb30308f681f9af34f0fc81.tar.gz
powerpc/kexec: make masking/disabling interrupts generic
Right now just the kexec crash pathway turns turns off the interrupts. Pull that out and make a generic version for use elsewhere Signed-off-by: Matthew McClintock <msm@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/machine_kexec.c')
-rw-r--r--arch/powerpc/kernel/machine_kexec.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index dd6c141..df7e20c 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -14,10 +14,34 @@
#include <linux/threads.h>
#include <linux/memblock.h>
#include <linux/of.h>
+#include <linux/irq.h>
+
#include <asm/machdep.h>
#include <asm/prom.h>
#include <asm/sections.h>
+void machine_kexec_mask_interrupts(void) {
+ unsigned int i;
+
+ for_each_irq(i) {
+ struct irq_desc *desc = irq_to_desc(i);
+
+ if (!desc || !desc->chip)
+ continue;
+
+ if (desc->chip->eoi &&
+ desc->status & IRQ_INPROGRESS)
+ desc->chip->eoi(i);
+
+ if (desc->chip->mask)
+ desc->chip->mask(i);
+
+ if (desc->chip->disable &&
+ !(desc->status & IRQ_DISABLED))
+ desc->chip->disable(i);
+ }
+}
+
void machine_crash_shutdown(struct pt_regs *regs)
{
if (ppc_md.machine_crash_shutdown)
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