[PATCH v3 1/3] gpio: pcf857x: change to devm_request_threaded_irq
Remove the request_irq and use devm_request_threaded_irq
also cleanup free_irq. devm_* takes care of that.
Signed-off-by: George Cherian
---
drivers/gpio/gpio-pcf857x.c | 28
1 file changed, 24 insertions(+), 4 deletions(-)
diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c
index 947cff4..4d0d28c 100644
--- a/drivers/gpio/gpio-pcf857x.c
+++ b/drivers/gpio/gpio-pcf857x.c
@@ -191,6 +191,25 @@ static int pcf857x_to_irq(struct gpio_chip *chip, unsigned
offset)
return irq_create_mapping(gpio->irq_domain, offset);
}
+static irqreturn_t pcf857x_irq(int irq, void *data)
+{
+ struct pcf857x *gpio = data;
+ unsigned long change, i, status, flags;
+
+ status = gpio->read(gpio->client);
+
+ spin_lock_irqsave(>slock, flags);
+
+ change = gpio->status ^ status;
+ for_each_set_bit(i, , gpio->chip.ngpio)
+ generic_handle_irq(irq_find_mapping(gpio->irq_domain, i));
+ gpio->status = status;
+
+ spin_unlock_irqrestore(>slock, flags);
+
+ return IRQ_HANDLED;
+}
+
static void pcf857x_irq_demux_work(struct work_struct *work)
{
struct pcf857x *gpio = container_of(work,
@@ -241,8 +260,6 @@ static void pcf857x_irq_domain_cleanup(struct pcf857x *gpio)
if (gpio->irq_domain)
irq_domain_remove(gpio->irq_domain);
- if (gpio->irq)
- free_irq(gpio->irq, gpio);
}
static int pcf857x_irq_domain_init(struct pcf857x *gpio,
@@ -258,8 +275,11 @@ static int pcf857x_irq_domain_init(struct pcf857x *gpio,
goto fail;
/* enable real irq */
- status = request_irq(client->irq, pcf857x_irq_demux, 0,
-dev_name(>dev), gpio);
+ status = devm_request_threaded_irq(>dev, client->irq,
+ NULL, pcf857x_irq, IRQF_ONESHOT |
+ IRQF_TRIGGER_FALLING,
+ dev_name(>dev), gpio);
+
if (status)
goto fail;
--
1.8.1.4
--
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the body of a message to majord...@vger.kernel.org
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Please read the FAQ at http://www.tux.org/lkml/
[PATCH v3 1/3] gpio: pcf857x: change to devm_request_threaded_irq
Remove the request_irq and use devm_request_threaded_irq
also cleanup free_irq. devm_* takes care of that.
Signed-off-by: George Cherian george.cher...@ti.com
---
drivers/gpio/gpio-pcf857x.c | 28
1 file changed, 24 insertions(+), 4 deletions(-)
diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c
index 947cff4..4d0d28c 100644
--- a/drivers/gpio/gpio-pcf857x.c
+++ b/drivers/gpio/gpio-pcf857x.c
@@ -191,6 +191,25 @@ static int pcf857x_to_irq(struct gpio_chip *chip, unsigned
offset)
return irq_create_mapping(gpio-irq_domain, offset);
}
+static irqreturn_t pcf857x_irq(int irq, void *data)
+{
+ struct pcf857x *gpio = data;
+ unsigned long change, i, status, flags;
+
+ status = gpio-read(gpio-client);
+
+ spin_lock_irqsave(gpio-slock, flags);
+
+ change = gpio-status ^ status;
+ for_each_set_bit(i, change, gpio-chip.ngpio)
+ generic_handle_irq(irq_find_mapping(gpio-irq_domain, i));
+ gpio-status = status;
+
+ spin_unlock_irqrestore(gpio-slock, flags);
+
+ return IRQ_HANDLED;
+}
+
static void pcf857x_irq_demux_work(struct work_struct *work)
{
struct pcf857x *gpio = container_of(work,
@@ -241,8 +260,6 @@ static void pcf857x_irq_domain_cleanup(struct pcf857x *gpio)
if (gpio-irq_domain)
irq_domain_remove(gpio-irq_domain);
- if (gpio-irq)
- free_irq(gpio-irq, gpio);
}
static int pcf857x_irq_domain_init(struct pcf857x *gpio,
@@ -258,8 +275,11 @@ static int pcf857x_irq_domain_init(struct pcf857x *gpio,
goto fail;
/* enable real irq */
- status = request_irq(client-irq, pcf857x_irq_demux, 0,
-dev_name(client-dev), gpio);
+ status = devm_request_threaded_irq(client-dev, client-irq,
+ NULL, pcf857x_irq, IRQF_ONESHOT |
+ IRQF_TRIGGER_FALLING,
+ dev_name(client-dev), gpio);
+
if (status)
goto fail;
--
1.8.1.4
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[PATCH v3 1/3] gpio: pcf857x: change to devm_request_threaded_irq
Remove the request_irq and use devm_request_threaded_irq
also cleanup free_irq. devm_* takes care of that.
Signed-off-by: George Cherian
---
drivers/gpio/gpio-pcf857x.c | 28
1 file changed, 24 insertions(+), 4 deletions(-)
diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c
index 947cff4..4d0d28c 100644
--- a/drivers/gpio/gpio-pcf857x.c
+++ b/drivers/gpio/gpio-pcf857x.c
@@ -191,6 +191,25 @@ static int pcf857x_to_irq(struct gpio_chip *chip, unsigned
offset)
return irq_create_mapping(gpio->irq_domain, offset);
}
+static irqreturn_t pcf857x_irq(int irq, void *data)
+{
+ struct pcf857x *gpio = data;
+ unsigned long change, i, status, flags;
+
+ status = gpio->read(gpio->client);
+
+ spin_lock_irqsave(>slock, flags);
+
+ change = gpio->status ^ status;
+ for_each_set_bit(i, , gpio->chip.ngpio)
+ generic_handle_irq(irq_find_mapping(gpio->irq_domain, i));
+ gpio->status = status;
+
+ spin_unlock_irqrestore(>slock, flags);
+
+ return IRQ_HANDLED;
+}
+
static void pcf857x_irq_demux_work(struct work_struct *work)
{
struct pcf857x *gpio = container_of(work,
@@ -241,8 +260,6 @@ static void pcf857x_irq_domain_cleanup(struct pcf857x *gpio)
if (gpio->irq_domain)
irq_domain_remove(gpio->irq_domain);
- if (gpio->irq)
- free_irq(gpio->irq, gpio);
}
static int pcf857x_irq_domain_init(struct pcf857x *gpio,
@@ -258,8 +275,11 @@ static int pcf857x_irq_domain_init(struct pcf857x *gpio,
goto fail;
/* enable real irq */
- status = request_irq(client->irq, pcf857x_irq_demux, 0,
-dev_name(>dev), gpio);
+ status = devm_request_threaded_irq(>dev, client->irq,
+ NULL, pcf857x_irq, IRQF_ONESHOT |
+ IRQF_TRIGGER_FALLING,
+ dev_name(>dev), gpio);
+
if (status)
goto fail;
--
1.8.1.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[PATCH v3 1/3] gpio: pcf857x: change to devm_request_threaded_irq
Remove the request_irq and use devm_request_threaded_irq
also cleanup free_irq. devm_* takes care of that.
Signed-off-by: George Cherian george.cher...@ti.com
---
drivers/gpio/gpio-pcf857x.c | 28
1 file changed, 24 insertions(+), 4 deletions(-)
diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c
index 947cff4..4d0d28c 100644
--- a/drivers/gpio/gpio-pcf857x.c
+++ b/drivers/gpio/gpio-pcf857x.c
@@ -191,6 +191,25 @@ static int pcf857x_to_irq(struct gpio_chip *chip, unsigned
offset)
return irq_create_mapping(gpio-irq_domain, offset);
}
+static irqreturn_t pcf857x_irq(int irq, void *data)
+{
+ struct pcf857x *gpio = data;
+ unsigned long change, i, status, flags;
+
+ status = gpio-read(gpio-client);
+
+ spin_lock_irqsave(gpio-slock, flags);
+
+ change = gpio-status ^ status;
+ for_each_set_bit(i, change, gpio-chip.ngpio)
+ generic_handle_irq(irq_find_mapping(gpio-irq_domain, i));
+ gpio-status = status;
+
+ spin_unlock_irqrestore(gpio-slock, flags);
+
+ return IRQ_HANDLED;
+}
+
static void pcf857x_irq_demux_work(struct work_struct *work)
{
struct pcf857x *gpio = container_of(work,
@@ -241,8 +260,6 @@ static void pcf857x_irq_domain_cleanup(struct pcf857x *gpio)
if (gpio-irq_domain)
irq_domain_remove(gpio-irq_domain);
- if (gpio-irq)
- free_irq(gpio-irq, gpio);
}
static int pcf857x_irq_domain_init(struct pcf857x *gpio,
@@ -258,8 +275,11 @@ static int pcf857x_irq_domain_init(struct pcf857x *gpio,
goto fail;
/* enable real irq */
- status = request_irq(client-irq, pcf857x_irq_demux, 0,
-dev_name(client-dev), gpio);
+ status = devm_request_threaded_irq(client-dev, client-irq,
+ NULL, pcf857x_irq, IRQF_ONESHOT |
+ IRQF_TRIGGER_FALLING,
+ dev_name(client-dev), gpio);
+
if (status)
goto fail;
--
1.8.1.4
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
