[PATCH] Provide dummy hard_irq_enable/disable() for PPC32

[PATCH] Provide dummy hard_irq_enable/disable() for PPC32

[Michael Ellerman]

To allow arch/powerpc/kernel/crash.c to build on 32-bit we need a
definition of hard_irq_disable(). 32-bit doesn't support the lazy
interrupt disabling mechanism, so on 32-bit hard_irq_disable() is
simply local_irq_disable(). Add a definition for hard_irq_enable()
just for completeness.

This allows (KEXEC=y && PPC32=y) to build again. Broken since
d04c56f73c30a5e593202ecfcf25ed43d42363a2.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
---
Paulus,

if this is OK by you, I think it should probably go in for 2.6.19.

---
 include/asm-powerpc/hw_irq.h |    3 +++
 1 file changed, 3 insertions(+)

Index: powerpc/include/asm-powerpc/hw_irq.h
===================================================================
--- powerpc.orig/include/asm-powerpc/hw_irq.h
+++ powerpc/include/asm-powerpc/hw_irq.h
@@ -92,6 +92,9 @@ static inline void local_irq_save_ptr(un
 #define local_irq_save(flags)	local_irq_save_ptr(&flags)
 #define irqs_disabled()		((mfmsr() & MSR_EE) == 0)
 
+#define hard_irq_enable()	local_irq_enable()
+#define hard_irq_disable()	local_irq_disable()
+
 #endif /* CONFIG_PPC64 */
 
 #define mask_irq(irq)						\

Re: [PATCH] Provide dummy hard_irq_enable/disable() for PPC32

[Rutger Nijlunsing]

On Sun, Nov 26, 2006 at 05:36:15PM +1100, Michael Ellerman wrote:
> To allow arch/powerpc/kernel/crash.c to build on 32-bit we need a
> definition of hard_irq_disable(). 32-bit doesn't support the lazy
> interrupt disabling mechanism, so on 32-bit hard_irq_disable() is
> simply local_irq_disable(). Add a definition for hard_irq_enable()
> just for completeness.
> 
> This allows (KEXEC=y && PPC32=y) to build again. Broken since
> d04c56f73c30a5e593202ecfcf25ed43d42363a2.
> 
> Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
> ---
> Paulus,
> 
> if this is OK by you, I think it should probably go in for 2.6.19.

d04c56f73c30a5e593202ecfcf25ed43d42363a2 is not in Linus' tree
currently, so no need to fix it in 2.6.19 I would say...

-- 
Rutger Nijlunsing ---------------------------------- eludias ed dse.nl
never attribute to a conspiracy which can be explained by incompetence
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