mfd: Set twl4030-irq irq nested flag

Threads from twl4030's children will be called
nested in the context of the demultiplexing
handler on twl4030-irq.c.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
index 1b9ab2f..ff16e9c 100644 (file)
--- a/drivers/mfd/twl4030-irq.c
+++ b/drivers/mfd/twl4030-irq.c
@@ -304,7 +304,7 @@ static irqreturn_t handle_twl4030_pih(int irq, void *devid)
                        pih_isr;
                        pih_isr >>= 1, module_irq++) {
                if (pih_isr & 0x1)
-                       generic_handle_irq(module_irq);
+                       handle_nested_irq(module_irq);
        }
 
        return IRQ_HANDLED;
@@ -596,9 +596,7 @@ static void handle_twl4030_sih(unsigned irq, struct irq_desc *desc)
        int isr;
 
        /* reading ISR acks the IRQs, using clear-on-read mode */
-       local_irq_enable();
        isr = sih_read_isr(sih);
-       local_irq_disable();
 
        if (isr < 0) {
                pr_err("twl4030: %s SIH, read ISR error %d\n",
@@ -613,7 +611,7 @@ static void handle_twl4030_sih(unsigned irq, struct irq_desc *desc)
                isr &= ~BIT(irq);
 
                if (irq < sih->bits)
-                       generic_handle_irq(agent->irq_base + irq);
+                       handle_nested_irq(agent->irq_base + irq);
                else
                        pr_err("twl4030: %s SIH, invalid ISR bit %d\n",
                                sih->name, irq);
@@ -720,6 +718,7 @@ int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end)
        for (i = irq_base; i < irq_end; i++) {
                irq_set_chip_and_handler(i, &twl4030_irq_chip,
                                         handle_simple_irq);
+               irq_set_nested_thread(i, 1);
                activate_irq(i);
        }
        twl4030_irq_next = i;
@@ -745,8 +744,10 @@ int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end)
 fail_rqirq:
        /* clean up twl4030_sih_setup */
 fail:
-       for (i = irq_base; i < irq_end; i++)
+       for (i = irq_base; i < irq_end; i++) {
+               irq_set_nested_thread(i, 0);
                irq_set_chip_and_handler(i, NULL, NULL);
+       }
 
        return status;
 }