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| author | Thomas Gleixner <tglx@linutronix.de> | 2017-09-13 23:29:13 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-09-25 20:38:25 +0200 |
| commit | 22d0b12f3560d3b3264ee79faa1c05a5060fb916 (patch) | |
| tree | ec490c11b08838e7022a0deb037ad82a2accc6cf /kernel/irq | |
| parent | 42e1cc2dc5b698181ab1ffb7972bd880230c506e (diff) | |
| download | linux-22d0b12f3560d3b3264ee79faa1c05a5060fb916.tar.bz2 | |
genirq/irqdomain: Add force reactivation flag to irq domains
Allow irqdomains to tell the core code, that after early activation the
interrupt needs to be reactivated at request_irq() time.
This allows reservation of vectors at early activation time and actual
vector assignment at request_irq() time.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Juergen Gross <jgross@suse.com>
Tested-by: Yu Chen <yu.c.chen@intel.com>
Acked-by: Juergen Gross <jgross@suse.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Alok Kataria <akataria@vmware.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Rui Zhang <rui.zhang@intel.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Len Brown <lenb@kernel.org>
Link: https://lkml.kernel.org/r/20170913213153.106242536@linutronix.de
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/msi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c index d7553d015175..edb987b2c58d 100644 --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -404,6 +404,8 @@ int msi_domain_alloc_irqs(struct irq_domain *domain, struct device *dev, ret = irq_domain_activate_irq(irq_data, true); if (ret) goto cleanup; + if (info->flags & MSI_FLAG_MUST_REACTIVATE) + irqd_clr_activated(irq_data); } } return 0; |