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authorPaul Burton <paul.burton@imgtec.com>2015-09-22 11:58:43 -0700
committerRalf Baechle <ralf@linux-mips.org>2015-11-11 08:35:49 +0100
commitecafe3e9b27644b51282b539878b7671ea28ac34 (patch)
tree6b9e8964e2ce68cec24ad70645d7cdce2488f56d /arch/mips/Kconfig
parente81a8c7dabac05d444eda315ff1a747b0fe38396 (diff)
MIPS: Malta: Register UP SMP ops if all else fails
If we fail to register any real SMP implementations, fall back to registering the dummy UP implementation. Otherwise when we build an SMP kernel & run it on a system where the SMP implementations fail to probe (eg. QEMU) the kernel will perform a NULL dereference attempting to call mp_ops->smp_setup() from plat_smp_setup(). Notably this fixes booting kernels with CPS SMP enabled on QEMU, which doesn't currently implement the CM, CPC or GIC. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Peter Hurley <peter@hurleysoftware.com> Cc: Rob Herring <robh@kernel.org> Cc: linux-kernel@vger.kernel.org Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11223/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/Kconfig')
-rw-r--r--arch/mips/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 703438a9698e..9322d267e774 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -425,6 +425,7 @@ config MIPS_MALTA
select MIPS_L1_CACHE_SHIFT_6
select PCI_GT64XXX_PCI0
select MIPS_MSC
+ select SMP_UP if SMP
select SWAP_IO_SPACE
select SYS_HAS_CPU_MIPS32_R1
select SYS_HAS_CPU_MIPS32_R2