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Subject[PATCH] PM / wakeirq: Add wakeup name to dedicated wake irqs
Date
This makes it easy to grep :wakeup /proc/interrupts.

Cc: Brian Norris <briannorris@chromium.org>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Suggested-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
drivers/base/power/power.h | 1 +
drivers/base/power/wakeirq.c | 18 +++++++++++++++---
2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h
--- a/drivers/base/power/power.h
+++ b/drivers/base/power/power.h
@@ -31,6 +31,7 @@ struct wake_irq {
struct device *dev;
unsigned int status;
int irq;
+ char *name;
};

extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
diff --git a/drivers/base/power/wakeirq.c b/drivers/base/power/wakeirq.c
--- a/drivers/base/power/wakeirq.c
+++ b/drivers/base/power/wakeirq.c
@@ -112,6 +112,7 @@ void dev_pm_clear_wake_irq(struct device *dev)
free_irq(wirq->irq, wirq);
wirq->status &= ~WAKE_IRQ_DEDICATED_MASK;
}
+ kfree(wirq->name);
kfree(wirq);
}
EXPORT_SYMBOL_GPL(dev_pm_clear_wake_irq);
@@ -175,7 +176,8 @@ static irqreturn_t handle_threaded_wake_irq(int irq, void *_wirq)
int dev_pm_set_dedicated_wake_irq(struct device *dev, int irq)
{
struct wake_irq *wirq;
- int err;
+ int err, namelen;
+ const char *postfix = ":wakeup";

if (irq < 0)
return -EINVAL;
@@ -184,6 +186,14 @@ int dev_pm_set_dedicated_wake_irq(struct device *dev, int irq)
if (!wirq)
return -ENOMEM;

+ namelen = strlen(dev_name(dev)) + strlen(postfix) + 1;
+ wirq->name = kzalloc(namelen, GFP_KERNEL);
+ if (!wirq->name) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ snprintf(wirq->name, namelen, "%s%s", dev_name(dev), postfix);
wirq->dev = dev;
wirq->irq = irq;
irq_set_status_flags(irq, IRQ_NOAUTOEN);
@@ -196,9 +206,9 @@ int dev_pm_set_dedicated_wake_irq(struct device *dev, int irq)
* so we use a threaded irq.
*/
err = request_threaded_irq(irq, NULL, handle_threaded_wake_irq,
- IRQF_ONESHOT, dev_name(dev), wirq);
+ IRQF_ONESHOT, wirq->name, wirq);
if (err)
- goto err_free;
+ goto err_free_name;

err = dev_pm_attach_wake_irq(dev, irq, wirq);
if (err)
@@ -210,6 +220,8 @@ int dev_pm_set_dedicated_wake_irq(struct device *dev, int irq)

err_free_irq:
free_irq(irq, wirq);
+err_free_name:
+ kfree(wirq->name);
err_free:
kfree(wirq);

--
2.16.1
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