iommu/irq_remapping: Refine function irq_remapping_prepare() for maintenance
Assign intel_irq_remap_ops to remap_ops only if intel_irq_remap_ops.prepare() succeeds. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Tested-by: Joerg Roedel <joro@8bytes.org> Cc: Tony Luck <tony.luck@intel.com> Cc: iommu@lists.linux-foundation.org Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Link: http://lkml.kernel.org/r/1420615903-28253-15-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>hifive-unleashed-5.1
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c392f56c94
commit
30969e34ae
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@ -204,15 +204,15 @@ int __init irq_remapping_prepare(void)
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if (disable_irq_remap)
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if (disable_irq_remap)
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return -ENOSYS;
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return -ENOSYS;
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remap_ops = &intel_irq_remap_ops;
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if (intel_irq_remap_ops.prepare() == 0)
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remap_ops = &intel_irq_remap_ops;
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#ifdef CONFIG_AMD_IOMMU
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else if (IS_ENABLED(CONFIG_AMD_IOMMU) &&
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if (amd_iommu_irq_ops.prepare() == 0) {
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amd_iommu_irq_ops.prepare() == 0)
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remap_ops = &amd_iommu_irq_ops;
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remap_ops = &amd_iommu_irq_ops;
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return 0;
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else
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}
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return -ENOSYS;
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#endif
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return remap_ops->prepare();
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return 0;
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}
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}
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int __init irq_remapping_enable(void)
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int __init irq_remapping_enable(void)
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