Re: [PATCH v2] MSI-HOWTO.txt: remove reference on IRQF_DISABLED

From: Jonathan Corbet
Date: Fri Feb 27 2015 - 17:17:14 EST


On Fri, 27 Feb 2015 12:55:16 +0100
Valentin Rothberg <Valentin.Rothberg@xxxxxxx> wrote:

> The IRQF_DISABLED is a NOOP and scheduled to be removed. According to
> Ingo Molnar (e58aa3d2d0cc01ad8d6f7f640a0670433f794922) running IRQ
> handlers with interrupts enabled can cause stack overflows when the
> interrupt line of the issuing device is still active.
>
> This patch removes IRQF_DISABLED from this documentation. It was
> mentioned to be a solution to avoid deadlocks when a device uses
> multiple interrupts. As the flag is a NOOP this solution does not work
> anymore.

Seems good, applied to the docs tree. I reworked the commit ID in the
changelog into the standard form (adding the one-line description),
though.

Thanks,

jon
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