Messages in this thread | | | Date | Sat, 8 Nov 2008 14:12:28 -0800 | From | "Yinghai Lu" <> | Subject | Re: [PATCH 1/1] irq: Maintain user set affinity |
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On Tue, Nov 4, 2008 at 8:31 AM, Kumar Gala <galak@kernel.crashing.org> wrote: > From 819ad3ed4660f4238e053728a8b5aa93d22b13d7 Mon Sep 17 00:00:00 2001 > From: Kumar Gala <galak@kernel.crashing.org> > Date: Tue, 4 Nov 2008 10:13:53 -0600 > Subject: [PATCH 1/1] irq: Maintain user set affinity > > This addresses a regression in that if a user specified an affinity > for an interrupt that affinity information would get reset between > a request_irq(), free_irq() and request_irq() for the same irq. > > On example of this is bringing up an ethernet interface, taking > it down and bringing it back up again. > > Instead of always using the irq_default_affinity we use the > previous setting of the IRQs affinity with the assumption that > at boot the IRQs affinity will be set to irq_default_affinity.
why ?, the default_affinity is expected behavior...
for example: when MSI is used, second driver could get same irq if first driver is unloaded.
YH
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