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Subject[PATCH] mfd: ab3100-core: use devm allocation
Date
From: Linus Walleij <linus.walleij@linaro.org>

Allocate memory and irq for device state using devm_*
helpers to simplify memory accounting.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/mfd/ab3100-core.c | 23 +++++++----------------
1 file changed, 7 insertions(+), 16 deletions(-)
diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index 1efad20..4276aab 100644
--- a/drivers/mfd/ab3100-core.c
+++ b/drivers/mfd/ab3100-core.c
@@ -867,7 +867,7 @@ static int __devinit ab3100_probe(struct i2c_client *client,
int err;
int i;

- ab3100 = kzalloc(sizeof(struct ab3100), GFP_KERNEL);
+ ab3100 = devm_kzalloc(&client->dev, sizeof(struct ab3100), GFP_KERNEL);
if (!ab3100) {
dev_err(&client->dev, "could not allocate AB3100 device\n");
return -ENOMEM;
@@ -921,7 +921,7 @@ static int __devinit ab3100_probe(struct i2c_client *client,

/* Attach a second dummy i2c_client to the test register address */
ab3100->testreg_client = i2c_new_dummy(client->adapter,
- client->addr + 1);
+ client->addr + 1);
if (!ab3100->testreg_client) {
err = -ENOMEM;
goto exit_no_testreg_client;
@@ -931,13 +931,13 @@ static int __devinit ab3100_probe(struct i2c_client *client,
if (err)
goto exit_no_setup;

- err = request_threaded_irq(client->irq, NULL, ab3100_irq_handler,
- IRQF_ONESHOT, "ab3100-core", ab3100);
- /* This real unpredictable IRQ is of course sampled for entropy */
- rand_initialize_irq(client->irq);
-
+ err = devm_request_threaded_irq(&client->dev,
+ client->irq, NULL, ab3100_irq_handler,
+ IRQF_ONESHOT, "ab3100-core", ab3100);
if (err)
goto exit_no_irq;
+ /* This real unpredictable IRQ is of course sampled for entropy */
+ rand_initialize_irq(client->irq);

err = abx500_register_ops(&client->dev, &ab3100_ops);
if (err)
@@ -962,7 +962,6 @@ static int __devinit ab3100_probe(struct i2c_client *client,
i2c_unregister_device(ab3100->testreg_client);
exit_no_testreg_client:
exit_no_detect:
- kfree(ab3100);
return err;
}

@@ -972,16 +971,8 @@ static int __devexit ab3100_remove(struct i2c_client *client)

/* Unregister subdevices */
mfd_remove_devices(&client->dev);
-
ab3100_remove_debugfs();
i2c_unregister_device(ab3100->testreg_client);
-
- /*
- * At this point, all subscribers should have unregistered
- * their notifiers so deactivate IRQ
- */
- free_irq(client->irq, ab3100);
- kfree(ab3100);
return 0;
}

--
1.7.9.2


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