diff options
| author | Laurent Vivier <lvivier@redhat.com> | 2020-11-26 09:28:51 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-11 13:23:30 +0100 |
| commit | 1f72986fc9df1e7f60b86ecc6fab57df512af907 (patch) | |
| tree | 00983daf16a47904734a63e5cd2ba78e49d474fb /include/linux | |
| parent | 6466119452a83ed77d7e4638833b3594b785bbf5 (diff) | |
genirq/irqdomain: Add an irq_create_mapping_affinity() function
commit bb4c6910c8b41623104c2e64a30615682689a54d upstream.
There is currently no way to convey the affinity of an interrupt
via irq_create_mapping(), which creates issues for devices that
expect that affinity to be managed by the kernel.
In order to sort this out, rename irq_create_mapping() to
irq_create_mapping_affinity() with an additional affinity parameter that
can be passed down to irq_domain_alloc_descs().
irq_create_mapping() is re-implemented as a wrapper around
irq_create_mapping_affinity().
No functional change.
Fixes: e75eafb9b039 ("genirq/msi: Switch to new irq spreading infrastructure")
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kurz <groug@kaod.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20201126082852.1178497-2-lvivier@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/irqdomain.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index e85f714a623e..824d7a19dd66 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -382,11 +382,19 @@ extern void irq_domain_associate_many(struct irq_domain *domain, extern void irq_domain_disassociate(struct irq_domain *domain, unsigned int irq); -extern unsigned int irq_create_mapping(struct irq_domain *host, - irq_hw_number_t hwirq); +extern unsigned int irq_create_mapping_affinity(struct irq_domain *host, + irq_hw_number_t hwirq, + const struct irq_affinity_desc *affinity); extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec); extern void irq_dispose_mapping(unsigned int virq); +static inline unsigned int irq_create_mapping(struct irq_domain *host, + irq_hw_number_t hwirq) +{ + return irq_create_mapping_affinity(host, hwirq, NULL); +} + + /** * irq_linear_revmap() - Find a linux irq from a hw irq number. * @domain: domain owning this hardware interrupt |