mfd: ezx-pcap: Remvove open coded irq handling

There is no point in checking irq_desc here, as it _is_ available. The
driver configured those lines, so they cannot go away.

The home brewn disabled/note_interrupt magic can be removed as well by
adding a irq_disable callback which avoids the lazy disable.

That driver needs to be converted to threaded interrupts.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/drivers/mfd/ezx-pcap.c b/drivers/mfd/ezx-pcap.c
index 9e2d8dd..92e6fbc 100644 (file)
--- a/drivers/mfd/ezx-pcap.c
+++ b/drivers/mfd/ezx-pcap.c
@@ -162,6 +162,7 @@ static void pcap_unmask_irq(struct irq_data *d)
 
 static struct irq_chip pcap_irq_chip = {
        .name           = "pcap",
+       .irq_disable    = pcap_mask_irq,
        .irq_mask       = pcap_mask_irq,
        .irq_unmask     = pcap_unmask_irq,
 };
@@ -196,17 +197,8 @@ static void pcap_isr_work(struct work_struct *work)
                local_irq_disable();
                service = isr & ~msr;
                for (irq = pcap->irq_base; service; service >>= 1, irq++) {
-                       if (service & 1) {
-                               struct irq_desc *desc = irq_to_desc(irq);
-
-                               if (WARN(!desc, "Invalid PCAP IRQ %d\n", irq))
-                                       break;
-
-                               if (desc->status & IRQ_DISABLED)
-                                       note_interrupt(irq, desc, IRQ_NONE);
-                               else
-                                       desc->handle_irq(irq, desc);
-                       }
+                       if (service & 1)
+                               generic_handle_irq(irq);
                }
                local_irq_enable();
                ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr);