On Thu, 6 Dec 2007, Pete Zaitcev wrote:
> On Wed, 5 Dec 2007 17:31:20 -0500 (EST), Alan Stern <[EMAIL PROTECTED]> wrote:
>
> > [...] In fact every HCD _must_ keep interrupts disabled
> > while doing most of its IRQ processing. This is because an interrupt
> > could cause some random driver to
On Wed, 5 Dec 2007 17:31:20 -0500 (EST), Alan Stern <[EMAIL PROTECTED]> wrote:
> [...] In fact every HCD _must_ keep interrupts disabled
> while doing most of its IRQ processing. This is because an interrupt
> could cause some random driver to submit an URB -- and URB submission
> can't be don
On Wednesday 05 December 2007, Alan Stern wrote:
> On Wed, 5 Dec 2007, David Brownell wrote:
>
> > On Wednesday 05 December 2007, Alan Stern wrote:
> > > But it will be easy enough to add IRQF_DISABLED in. Only a few drivers
> > > omit it.
> >
> > I forgot that the flags are passed in to usb_ad
On Wed, 5 Dec 2007, Pete Zaitcev wrote:
> On Wed, 5 Dec 2007 16:35:26 -0500 (EST), Alan Stern <[EMAIL PROTECTED]> wrote:
>
> > Host controller IRQs are supposed to be serviced with interrupts
> > disabled. This patch (as1025) adds an IRQF_DISABLED flag to all the
> > controller drivers that lack
On Wed, 5 Dec 2007, Pete Zaitcev wrote:
> On Wed, 5 Dec 2007 10:15:44 -0500 (EST), Alan Stern <[EMAIL PROTECTED]> wrote:
>
> > http://bugzilla.kernel.org/show_bug.cgi?id=9335
> >
> > The problem appears to be that ohci-hcd (and also ehci-hcd) calls
> > spin_lock() in its IRQ handler instead
On Wed, 5 Dec 2007 16:35:26 -0500 (EST), Alan Stern <[EMAIL PROTECTED]> wrote:
> Host controller IRQs are supposed to be serviced with interrupts
> disabled. This patch (as1025) adds an IRQF_DISABLED flag to all the
> controller drivers that lack it.
OK, if you prefer to use a crew-fired weapon
On Wed, 5 Dec 2007 10:15:44 -0500 (EST), Alan Stern <[EMAIL PROTECTED]> wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=9335
>
> The problem appears to be that ohci-hcd (and also ehci-hcd) calls
> spin_lock() in its IRQ handler instead of spin_lock_irqsave(). A
> deadlock occurs becaus
On Wed, 5 Dec 2007, David Brownell wrote:
> On Wednesday 05 December 2007, Alan Stern wrote:
> > But it will be easy enough to add IRQF_DISABLED in. Only a few drivers
> > omit it.
>
> I forgot that the flags are passed in to usb_add_hcd()... if we
> go that route, the drivers that don't pass i
On Wednesday 05 December 2007, Alan Stern wrote:
> But it will be easy enough to add IRQF_DISABLED in. Only a few drivers
> omit it.
I forgot that the flags are passed in to usb_add_hcd()... if we
go that route, the drivers that don't pass it should be updated
and so should hcd-pci.c; that seems
On Wed, 5 Dec 2007, David Brownell wrote:
> On Wednesday 05 December 2007, Alan Stern wrote:
> >
> > In regard to:
> >
> > http://bugzilla.kernel.org/show_bug.cgi?id=9335
> >
> > The problem appears to be that ohci-hcd (and also ehci-hcd) calls
> > spin_lock() in its IRQ handler instead of
On Wednesday 05 December 2007, Alan Stern wrote:
>
> In regard to:
>
> http://bugzilla.kernel.org/show_bug.cgi?id=9335
>
> The problem appears to be that ohci-hcd (and also ehci-hcd) calls
> spin_lock() in its IRQ handler instead of spin_lock_irqsave(). A
> deadlock occurs because interru
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