On Tue, 13 Jan 2015, Boris Brezillon wrote:
> + ret = irq_set_handler_data(irq, demux);
> + if (ret) {
> + pr_err("Failed to assign handler data\n");
> + goto err_free_domain;
> + }
> +
> + irq_set_chained_handler(irq, irq_dumb_demux_handler);
> +
> + /*
> + * Disable the src irq (automatically enabled by
> + * irq_set_chained_handler) to prevent irqs from happening while
> + * nobody requested any of the demuxed irqs.
> + */
> + disable_irq(irq);
We rather prevent the startup of the irq line right away.
enum {
IRQ_CHAINED_NONE,
IRQ_CHAINED_STARTUP,
IRQ_CHAINED_NOSTARTUP,
};
-__irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
- const char *name);
+__irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int chained_mode,
+ const char *name);
{
....
if (handle != handle_bad_irq && chained_mode) {
irq_settings_set_noprobe(desc);
irq_settings_set_norequest(desc);
irq_settings_set_nothread(desc);
- irq_startup(desc, true);
+ if (chained_mode == IRQ_CHAINED_STARTUP)
+ irq_startup(desc, true);
}
....
}
Hmm?
tglx
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