2014-06-11 04:35:46

by Varka Bhadram

Subject: [net-next PATCH] mrf24j40: add device managed APIs

adds the device managed APIs so that no need worry about
freeing the resources.

Signed-off-by: Varka Bhadram <[email protected]>
---
drivers/net/ieee802154/mrf24j40.c | 33 +++++++++++++--------------------
1 file changed, 13 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c
index 78a6552..4048062 100644
--- a/drivers/net/ieee802154/mrf24j40.c
+++ b/drivers/net/ieee802154/mrf24j40.c
@@ -618,12 +618,12 @@ static int mrf24j40_probe(struct spi_device *spi)

printk(KERN_INFO "mrf24j40: probe(). IRQ: %d\n", spi->irq);

- devrec = kzalloc(sizeof(struct mrf24j40), GFP_KERNEL);
+ devrec = devm_kzalloc(&spi->dev, sizeof(struct mrf24j40), GFP_KERNEL);
if (!devrec)
- goto err_devrec;
- devrec->buf = kzalloc(3, GFP_KERNEL);
+ goto err_ret;
+ devrec->buf = devm_kzalloc(&spi->dev, 3, GFP_KERNEL);
if (!devrec->buf)
- goto err_buf;
+ goto err_ret;

spi->mode = SPI_MODE_0; /* TODO: Is this appropriate for right here? */
if (spi->max_speed_hz > MAX_SPI_SPEED_HZ)
@@ -638,7 +638,7 @@ static int mrf24j40_probe(struct spi_device *spi)

devrec->dev = ieee802154_alloc_device(0, &mrf24j40_ops);
if (!devrec->dev)
- goto err_alloc_dev;
+ goto err_ret;

devrec->dev->priv = devrec;
devrec->dev->parent = &devrec->spi->dev;
@@ -676,12 +676,13 @@ static int mrf24j40_probe(struct spi_device *spi)
val &= ~0x3; /* Clear RX mode (normal) */
write_short_reg(devrec, REG_RXMCR, val);

- ret = request_threaded_irq(spi->irq,
- NULL,
- mrf24j40_isr,
- IRQF_TRIGGER_LOW|IRQF_ONESHOT,
- dev_name(&spi->dev),
- devrec);
+ ret = devm_request_threaded_irq(&spi->dev,
+ spi->irq,
+ NULL,
+ mrf24j40_isr,
+ IRQF_TRIGGER_LOW|IRQF_ONESHOT,
+ dev_name(&spi->dev),
+ devrec);

if (ret) {
dev_err(printdev(devrec), "Unable to get IRQ");
@@ -695,11 +696,7 @@ err_read_reg:
ieee802154_unregister_device(devrec->dev);
err_register_device:
ieee802154_free_device(devrec->dev);
-err_alloc_dev:
- kfree(devrec->buf);
-err_buf:
- kfree(devrec);
-err_devrec:
+err_ret:
return ret;
}

@@ -709,15 +706,11 @@ static int mrf24j40_remove(struct spi_device *spi)

dev_dbg(printdev(devrec), "remove\n");

- free_irq(spi->irq, devrec);
ieee802154_unregister_device(devrec->dev);
ieee802154_free_device(devrec->dev);
/* TODO: Will ieee802154_free_device() wait until ->xmit() is
* complete? */

- /* Clean up the SPI stuff. */
- kfree(devrec->buf);
- kfree(devrec);
return 0;
}

--
1.7.9.5

2014-06-11 22:40:40

by David Miller

Subject: Re: [net-next PATCH] mrf24j40: add device managed APIs

From: Varka Bhadram <[email protected]>
Date: Wed, 11 Jun 2014 10:04:44 +0530

> adds the device managed APIs so that no need worry about
> freeing the resources.
>
> Signed-off-by: Varka Bhadram <[email protected]>

Applied.