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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2006-07-04 14:09:36 +1000
committerPaul Mackerras <paulus@samba.org>2006-07-07 20:19:15 +1000
commit1e031d65b0cb5f882b20ebc356ea0345ff18dbf0 (patch)
tree71e14bb61e74237ed1246e00994e1836787612fe /arch/powerpc/platforms/chrp
parent470407a88e549135dce5fba7d86fb9910f500e56 (diff)
[POWERPC] Fix non-MPIC CHRPs with CONFIG_SMP set
Pseudo-CHRP machines like Pegasos without an MPIC would crash at boot if CONFIG_SMP was set because the "smp_ops" pointer was set to MPIC related ops unconditionally. This patch makes it NULL on machines that don't support SMP and provides proper default behaviour in the callers when smp_ops is NULL. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/chrp')
-rw-r--r--arch/powerpc/platforms/chrp/setup.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c
index 538e337d63e..9c08ff32229 100644
--- a/arch/powerpc/platforms/chrp/setup.c
+++ b/arch/powerpc/platforms/chrp/setup.c
@@ -291,10 +291,6 @@ void __init chrp_setup_arch(void)
pci_create_OF_bus_map();
-#ifdef CONFIG_SMP
- smp_ops = &chrp_smp_ops;
-#endif /* CONFIG_SMP */
-
/*
* Print the banner, then scroll down so boot progress
* can be printed. -- Cort
@@ -479,6 +475,14 @@ void __init chrp_init_IRQ(void)
chrp_find_openpic();
chrp_find_8259();
+#ifdef CONFIG_SMP
+ /* Pegasos has no MPIC, those ops would make it crash. It might be an
+ * option to move setting them to after we probe the PIC though
+ */
+ if (chrp_mpic != NULL)
+ smp_ops = &chrp_smp_ops;
+#endif /* CONFIG_SMP */
+
if (_chrp_type == _CHRP_Pegasos)
ppc_md.get_irq = i8259_irq;