svn commit: r187714 - head/sys/dev/ppbus
Christian Peron
csjp at FreeBSD.org
Mon Jan 26 13:07:13 PST 2009
John
I think I found another issue relating to these changes. The patch I have
attached fixes a panic on bootup in lpt.
Any objections?
On Mon, Jan 26, 2009 at 02:12:13PM +0000, John Baldwin wrote:
> Author: jhb
> Date: Mon Jan 26 14:12:12 2009
> New Revision: 187714
> URL: http://svn.freebsd.org/changeset/base/187714
>
> Log:
> Add missing locking around setting the ppc interrupt handler IVAR.
>
> Reported by: many
>
> Modified:
> head/sys/dev/ppbus/ppbconf.c
>
> Modified: head/sys/dev/ppbus/ppbconf.c
> ==============================================================================
> --- head/sys/dev/ppbus/ppbconf.c Mon Jan 26 14:03:39 2009 (r187713)
> +++ head/sys/dev/ppbus/ppbconf.c Mon Jan 26 14:12:12 2009 (r187714)
> @@ -393,8 +393,10 @@ ppbus_attach(device_t dev)
> ppb->ppc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
> RF_SHAREABLE);
> if (ppb->ppc_irq_res != NULL) {
> + mtx_lock(ppb->ppc_lock);
> error = BUS_WRITE_IVAR(device_get_parent(dev), dev,
> PPC_IVAR_INTR_HANDLER, (uintptr_t)&ppbus_intr);
> + mtx_unlock(ppb->ppc_lock);
> if (error) {
> device_printf(dev, "Unable to set interrupt handler\n");
> return (error);
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