threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/*
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* Copyright 2006-2007, Michael Ellerman, IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/msi.h>
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#include <linux/pci.h>
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#include <asm/machdep.h>
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int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
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{
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struct pci_controller *phb = pci_bus_to_host(dev->bus);
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if (!phb->controller_ops.setup_msi_irqs ||
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!phb->controller_ops.teardown_msi_irqs) {
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pr_debug("msi: Platform doesn't provide MSI callbacks.\n");
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return -ENOSYS;
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}
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/* PowerPC doesn't support multiple MSI yet */
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if (type == PCI_CAP_ID_MSI && nvec > 1)
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return 1;
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return phb->controller_ops.setup_msi_irqs(dev, nvec, type);
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}
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void arch_teardown_msi_irqs(struct pci_dev *dev)
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{
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struct pci_controller *phb = pci_bus_to_host(dev->bus);
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/*
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* We can be called even when arch_setup_msi_irqs() returns -ENOSYS,
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* so check the pointer again.
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*/
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if (phb->controller_ops.teardown_msi_irqs)
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phb->controller_ops.teardown_msi_irqs(dev);
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}
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