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authorNeilBrown <neilb@suse.de>2011-11-27 07:17:41 +1100
committerSamuel Ortiz <sameo@linux.intel.com>2011-12-20 18:53:25 +0100
commitc1e61bcf8269d3bc4390a363ad2e1bc1dc226bda (patch)
treef64a5a7937d1a98f4fbb4f5940e325dc03c79889
parent286f8f3cd615177d5d0f8af8059a3fa39f51fa97 (diff)
downloadlinux-c1e61bcf8269d3bc4390a363ad2e1bc1dc226bda.tar.bz2
mfd: Use request_threaded_irq for twl4030-irq instead of irq_set_chained_handler
irq_set_chained_handler sets 'desc->handle_irq'. However this irq is called by handle_nested_irq from handle_twl4030_pih, and that uses action->thread_fn. So the handled set with irq_set_chained_handler is never called. So change to use request_threaded_irq instead - that sets the correct field. Tested on GTA04 Phoenux. Signed-off-by: NeilBrown <neilb@suse.de> Tested-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
-rw-r--r--drivers/mfd/twl4030-irq.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
index 3d3d6ed48f8d..29f11e0765fe 100644
--- a/drivers/mfd/twl4030-irq.c
+++ b/drivers/mfd/twl4030-irq.c
@@ -432,6 +432,7 @@ struct sih_agent {
u32 edge_change;
struct mutex irq_lock;
+ char *irq_name;
};
/*----------------------------------------------------------------------*/
@@ -589,7 +590,7 @@ static inline int sih_read_isr(const struct sih *sih)
* Generic handler for SIH interrupts ... we "know" this is called
* in task context, with IRQs enabled.
*/
-static void handle_twl4030_sih(unsigned irq, struct irq_desc *desc)
+static irqreturn_t handle_twl4030_sih(int irq, void *data)
{
struct sih_agent *agent = irq_get_handler_data(irq);
const struct sih *sih = agent->sih;
@@ -602,7 +603,7 @@ static void handle_twl4030_sih(unsigned irq, struct irq_desc *desc)
pr_err("twl4030: %s SIH, read ISR error %d\n",
sih->name, isr);
/* REVISIT: recover; eventually mask it all, etc */
- return;
+ return IRQ_HANDLED;
}
while (isr) {
@@ -616,6 +617,7 @@ static void handle_twl4030_sih(unsigned irq, struct irq_desc *desc)
pr_err("twl4030: %s SIH, invalid ISR bit %d\n",
sih->name, irq);
}
+ return IRQ_HANDLED;
}
static unsigned twl4030_irq_next;
@@ -668,18 +670,19 @@ int twl4030_sih_setup(int module)
activate_irq(irq);
}
- status = irq_base;
twl4030_irq_next += i;
/* replace generic PIH handler (handle_simple_irq) */
irq = sih_mod + twl4030_irq_base;
irq_set_handler_data(irq, agent);
- irq_set_chained_handler(irq, handle_twl4030_sih);
+ agent->irq_name = kasprintf(GFP_KERNEL, "twl4030_%s", sih->name);
+ status = request_threaded_irq(irq, NULL, handle_twl4030_sih, 0,
+ agent->irq_name ?: sih->name, NULL);
pr_info("twl4030: %s (irq %d) chaining IRQs %d..%d\n", sih->name,
irq, irq_base, twl4030_irq_next - 1);
- return status;
+ return status < 0 ? status : irq_base;
}
/* FIXME need a call to reverse twl4030_sih_setup() ... */