From: Thomas Gleixner <tglx@linutronix.de>
To: Cao jin <caoj.fnst@cn.fujitsu.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
Chen Fan <chen.fan.fnst@cn.fujitsu.com>,
linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
rjw@rjwysocki.net, lenb@kernel.org, izumi.taku@jp.fujitsu.com,
wency@cn.fujitsu.com, ddaney.cavm@gmail.com,
okaya@codeaurora.org, bhelgaas@google.com,
jiang.liu@linux.intel.com, linux-pci@vger.kernel.org
Subject: Re: [PATCH v2] pci: fix unavailable irq number 255 reported by BIOS
Date: Wed, 27 Jan 2016 09:35:22 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.11.1601270933560.3886@nanos> (raw)
In-Reply-To: <56A85494.8070606@cn.fujitsu.com>
On Wed, 27 Jan 2016, Cao jin wrote:
> How about using IRQ_BITMAP_BITS as that "irq_valid" flag? because it is the
> ceiling of struct irq_desc irq_desc[], and request_irq() will return -EINVAL
> in case of the ceiling.
>
> #ifdef CONFIG_SPARSE_IRQ
> # define IRQ_BITMAP_BITS (NR_IRQS + 8196)
> #else
> # define IRQ_BITMAP_BITS NR_IRQS
> #endif
No. This is a core internal implementation detail.
Thanks,
tglx
next prev parent reply other threads:[~2016-01-27 8:35 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-25 6:59 [PATCH v2] pci: fix unavailable irq number 255 reported by BIOS Chen Fan
2016-01-25 20:58 ` Bjorn Helgaas
2016-01-26 1:40 ` Chen Fan
2016-01-26 4:05 ` Guenter Roeck
2016-01-26 8:26 ` Thomas Gleixner
2016-01-26 9:45 ` Chen Fan
2016-01-26 9:51 ` Thomas Gleixner
2016-01-26 15:22 ` Bjorn Helgaas
2016-01-26 15:48 ` Thomas Gleixner
2016-01-27 0:25 ` Bjorn Helgaas
2016-01-27 5:24 ` Cao jin
2016-01-27 8:35 ` Thomas Gleixner [this message]
2016-01-27 9:13 ` Thomas Gleixner
2016-01-27 22:32 ` Bjorn Helgaas
2016-01-28 1:00 ` Chen Fan
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