diff options
author | Samuel Holland <samuel@sholland.org> | 2022-07-01 15:00:54 -0500 |
---|---|---|
committer | Marc Zyngier <maz@kernel.org> | 2022-07-07 09:38:04 +0100 |
commit | 073352e951f60946452da358d64841066c3142ff (patch) | |
tree | 3cecbf9913ae1ccb5aa3593bd00f599a467b4a4b /arch/ia64/kernel/msi_ia64.c | |
parent | genirq: Refactor accessors to use irq_data_get_affinity_mask (diff) | |
download | linux-dev-073352e951f60946452da358d64841066c3142ff.tar.xz linux-dev-073352e951f60946452da358d64841066c3142ff.zip |
genirq: Add and use an irq_data_update_affinity helper
Some architectures and irqchip drivers modify the cpumask returned by
irq_data_get_affinity_mask, usually by copying in to it. This is
problematic for uniprocessor configurations, where the affinity mask
should be constant, as it is known at compile time.
Add and use a setter for the affinity mask, following the pattern of
irq_data_update_effective_affinity. This allows the getter function to
return a const cpumask pointer.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Xen bits
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220701200056.46555-7-samuel@sholland.org
Diffstat (limited to 'arch/ia64/kernel/msi_ia64.c')
-rw-r--r-- | arch/ia64/kernel/msi_ia64.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/ia64/kernel/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c index df5c28f252e3..025e5133c860 100644 --- a/arch/ia64/kernel/msi_ia64.c +++ b/arch/ia64/kernel/msi_ia64.c @@ -37,7 +37,7 @@ static int ia64_set_msi_irq_affinity(struct irq_data *idata, msg.data = data; pci_write_msi_msg(irq, &msg); - cpumask_copy(irq_data_get_affinity_mask(idata), cpumask_of(cpu)); + irq_data_update_affinity(idata, cpumask_of(cpu)); return 0; } @@ -132,7 +132,7 @@ static int dmar_msi_set_affinity(struct irq_data *data, msg.address_lo |= MSI_ADDR_DEST_ID_CPU(cpu_physical_id(cpu)); dmar_msi_write(irq, &msg); - cpumask_copy(irq_data_get_affinity_mask(data), mask); + irq_data_update_affinity(data, mask); return 0; } |