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| author | Paul Burton | 2015-09-22 20:58:43 +0200 |
|---|---|---|
| committer | Ralf Baechle | 2015-11-11 08:35:49 +0100 |
| commit | ecafe3e9b27644b51282b539878b7671ea28ac34 (patch) | |
| tree | 6b9e8964e2ce68cec24ad70645d7cdce2488f56d /arch/mips/mti-malta | |
| parent | MIPS: Malta: Setup RAM regions via DT (diff) | |
| download | kernel-qcow2-linux-ecafe3e9b27644b51282b539878b7671ea28ac34.tar.gz kernel-qcow2-linux-ecafe3e9b27644b51282b539878b7671ea28ac34.tar.xz kernel-qcow2-linux-ecafe3e9b27644b51282b539878b7671ea28ac34.zip | |
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/mti-malta')
| -rw-r--r-- | arch/mips/mti-malta/malta-init.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c index 53c24784a2f7..571148c5fd0b 100644 --- a/arch/mips/mti-malta/malta-init.c +++ b/arch/mips/mti-malta/malta-init.c @@ -302,6 +302,7 @@ mips_pci_controller: return; if (!register_vsmp_smp_ops()) return; + register_up_smp_ops(); } void platform_early_l2_init(void) |