linux-toradex.git/kernel/irq/ipi.c, branch v5.16

genirq: Fix kernel-doc warnings in pm.c, msi.c and ipi.c

2021-08-11T12:33:35+00:00

Fix all kernel-doc warnings in these 3 files and do some simple editing
(capitalize acronyms, capitalize Linux).

kernel/irq/pm.c:235: warning: expecting prototype for irq_pm_syscore_ops(). Prototype was for irq_pm_syscore_resume() instead
kernel/irq/msi.c:530: warning: expecting prototype for __msi_domain_free_irqs(). Prototype was for msi_domain_free_irqs() instead
kernel/irq/msi.c:31: warning: No description found for return value of 'alloc_msi_entry'
kernel/irq/msi.c:103: warning: No description found for return value of 'msi_domain_set_affinity'
kernel/irq/msi.c:288: warning: No description found for return value of 'msi_create_irq_domain'
kernel/irq/msi.c:499: warning: No description found for return value of 'msi_domain_alloc_irqs'
kernel/irq/msi.c:545: warning: No description found for return value of 'msi_get_domain_info'
kernel/irq/ipi.c:264: warning: expecting prototype for ipi_send_mask(). Prototype was for __ipi_send_mask() instead
kernel/irq/ipi.c:25: warning: No description found for return value of 'irq_reserve_ipi'
kernel/irq/ipi.c:116: warning: No description found for return value of 'irq_destroy_ipi'
kernel/irq/ipi.c:163: warning: No description found for return value of 'ipi_get_hwirq'
kernel/irq/ipi.c:222: warning: No description found for return value of '__ipi_send_single'
kernel/irq/ipi.c:308: warning: No description found for return value of 'ipi_send_single'
kernel/irq/ipi.c:329: warning: No description found for return value of 'ipi_send_mask'

Signed-off-by: Randy Dunlap 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/r/20210810234835.12547-1-rdunlap@infradead.org

genirq: Fix typos and misspellings in comments

2021-03-16T14:08:29+00:00

No functional change.

Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/r/20210316100205.23492-1-krzysztof.kozlowski@canonical.com

genirq: Fix various typos in comments

2018-12-18T13:22:28+00:00

Go over the IRQ subsystem source code (including irqchip drivers) and
fix common typos in comments.

No change in functionality intended.

Signed-off-by: Ingo Molnar 
Cc: Thomas Gleixner 
Cc: Jason Cooper 
Cc: Marc Zyngier 
Cc: Peter Zijlstra 
Cc: Linus Torvalds 
Cc: linux-kernel@vger.kernel.org

genirq: Add missing SPDX identifiers

2018-03-20T13:23:28+00:00

Add SPDX identifiers to files

 - which contain an explicit license boiler plate or reference

 - which do not contain a license reference and were not updated in the
   initial SPDX conversion because the license was deduced by the scanners
   via EXPORT_SYMBOL_GPL as GPL2.0 only.

[ tglx: Moved adding identifiers from the patch which removes the
  	references/boilerplate ]

Signed-off-by: Thomas Gleixner 
Cc: Kate Stewart 
Cc: Greg Kroah-Hartman 
Cc: Philippe Ombredanne 
Link: https://lkml.kernel.org/r/20180314212030.668321222@linutronix.de

genirq: Cleanup top of file comments

2018-03-20T13:23:27+00:00

Remove pointless references to the file name itself and condense the
information so it wastes less space.

Signed-off-by: Thomas Gleixner 
Acked-by: Marc Zyngier 
Cc: Kate Stewart 
Cc: Greg Kroah-Hartman 
Cc: Philippe Ombredanne 
Link: https://lkml.kernel.org/r/20180314212030.412095827@linutronix.de

genirq/ipi: Fixup checks against nr_cpu_ids

2017-08-20T08:49:05+00:00

Valid CPU ids are [0, nr_cpu_ids-1] inclusive.

Fixes: 3b8e29a82dd1 ("genirq: Implement ipi_send_mask/single()")
Fixes: f9bce791ae2a ("genirq: Add a new function to get IPI reverse mapping")
Signed-off-by: Alexey Dobriyan 
Signed-off-by: Thomas Gleixner 
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20170819095751.GB27864@avx2

genirq: Fix missing irq allocation affinity hint

2016-07-19T08:49:47+00:00

The new affinity hint argument of __irq_domain_alloc_irqs() is missing in
irq_reserve_ipi(). Add it.

This fixes the following compilation error:

  kernel/irq/ipi.c: In function ‘irq_reserve_ipi’:
  kernel/irq/ipi.c:85:9: error: too few arguments to function ‘__irq_domain_alloc_irqs’
    virq = __irq_domain_alloc_irqs(domain, virq, nr_irqs, NUMA_NO_NODE,
           ^
Fixes: 06ee6d571f0e ("genirq: Add affinity hint to irq allocation")
Signed-off-by: Vincent Stehlé 
Cc: linux-pci@vger.kernel.org
Cc: Christoph Hellwig 
Signed-off-by: Thomas Gleixner

genirq: Add affinity hint to irq allocation

2016-07-04T10:25:13+00:00

Add an extra argument to the irq(domain) allocation functions, so we can hand
down affinity hints to the allocator. Thats necessary to implement proper
support for multiqueue devices.

Signed-off-by: Thomas Gleixner 
Cc: Christoph Hellwig 
Cc: linux-block@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: linux-nvme@lists.infradead.org
Cc: axboe@fb.com
Cc: agordeev@redhat.com
Link: http://lkml.kernel.org/r/1467621574-8277-4-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner

genirq: Fix missing return value in irq_destroy_ipi()

2016-05-24T13:40:14+00:00

Commit 7cec18a3906b changed the return type of irq_destroy_ipi to int, but
missed adding a value to one return statement. Fix this to silence the
resulting compiler warning:

kernel/irq/ipi.c In function ‘irq_destroy_ipi’:
kernel/irq/ipi.c:128:3: warning: ‘return’ with no value, in function returning non-void [-Wreturn-type]

Fixes: 7cec18a3906b "genirq: Add error code reporting to irq_{reserve,destroy}_ipi"
Signed-off-by: Matt Redfearn 
Cc: linux-mips@linux-mips.org
Link: http://lkml.kernel.org/r/1464086550-24734-1-git-send-email-matt.redfearn@imgtec.com
Signed-off-by: Thomas Gleixner

genirq: Add error code reporting to irq_{reserve,destroy}_ipi

2016-05-02T11:42:50+00:00

Make these functions return appropriate error codes when something goes
wrong.

Previously irq_destroy_ipi returned void making it impossible to notify
the caller if the request could not be fulfilled. Patch 1 in the series
added another condition in which this could fail in addition to the
existing ones. irq_reserve_ipi returned an unsigned int meaning it could
only return 0 on failure and give the caller no indication as to why the
request failed.

As time goes on there are likely to be further conditions added in which
these functions can fail. These APIs and the IPI IRQ domain are new in
4.6 and the number of existing call sites are low, changing the API now
has little impact on the code, while making it easier for these
functions to grow over time.

Signed-off-by: Matt Redfearn 
Cc: linux-mips@linux-mips.org
Cc: jason@lakedaemon.net
Cc: marc.zyngier@arm.com
Cc: ralf@linux-mips.org
Cc: Qais Yousef 
Cc: lisa.parratt@imgtec.com
Cc: jiang.liu@linux.intel.com
Link: http://lkml.kernel.org/r/1461568464-31701-2-git-send-email-matt.redfearn@imgtec.com
Signed-off-by: Thomas Gleixner