Commit-ID:  25e960efc63852b84d1c3739aef586285b177395
Gitweb:     https://git.kernel.org/tip/25e960efc63852b84d1c3739aef586285b177395
Author:     Thomas Gleixner <[email protected]>
AuthorDate: Tue, 17 Oct 2017 09:54:58 +0200
Committer:  Thomas Gleixner <[email protected]>
CommitDate: Wed, 18 Oct 2017 15:38:31 +0200

PCI/MSI: Set MSI_FLAG_MUST_REACTIVATE in core code

If interrupt reservation mode is enabled then the PCI/MSI interrupts must
be reactivated after early activation.

Make sure that all callers of pci_msi_create_irq_domain() have the
MSI_FLAG_MUST_REACTIVATE set when reservation mode is enabled.

Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Josh Poulson <[email protected]>
Cc: Mihai Costache <[email protected]>
Cc: Stephen Hemminger <[email protected]>
Cc: Marc Zyngier <[email protected]>
Cc: [email protected]
Cc: Haiyang Zhang <[email protected]>
Cc: Dexuan Cui <[email protected]>
Cc: Simon Xiao <[email protected]>
Cc: Saeed Mahameed <[email protected]>
Cc: Jork Loeser <[email protected]>
Cc: Bjorn Helgaas <[email protected]>
Cc: [email protected]
Cc: KY Srinivasan <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]

---
 drivers/pci/msi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 496ed91..e066071 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -1441,6 +1441,8 @@ struct irq_domain *pci_msi_create_irq_domain(struct 
fwnode_handle *fwnode,
                pci_msi_domain_update_chip_ops(info);
 
        info->flags |= MSI_FLAG_ACTIVATE_EARLY;
+       if (IS_ENABLED(CONFIG_GENERIC_IRQ_RESERVATION_MODE))
+               info->flags |= MSI_FLAG_MUST_REACTIVATE;
 
        domain = msi_create_irq_domain(fwnode, info, parent);
        if (!domain)

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