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SubjectRe: [PATCH] USB: fix interrupt disabling for HCDs with shared interrupt handlers
On Mon, 30 Jun 2008, Stefan Becker wrote:

> Hi,
> here is the proposed patch to fix the problem. I hope I used git
> correctly to generate it...

> This patch doesn't modify the interface of usb_add_hcd(), i.e. HCD code
> can still use IRQF_DISABLED. It will now silently convert this into an
> internal HCD flag and clear IRQF_DISABLED before requesting the interrupt
> from the Linux core. usb_hcd_irq() will check this flag to disable/re-enable
> the interrupts on a case by case basis.

Don't bother with this extra stuff. All USB host controller drivers
want to have interrupts disabled when their IRQ handlers run.

Alan Stern

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