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can: mcp251x: Convert to devm-* API

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Replace existing resource handling in the driver with managed
device resource, this ensures more consistent error values and
simplifies error paths.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Alexander Shiyan 2013-12-15 18:16:00 +04:00 committed by Marc Kleine-Budde
parent 05780d9808
commit 21629e1a11
1 changed files with 6 additions and 13 deletions
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19
drivers/net/can/mcp251x.c
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@ -1066,15 +1066,17 @@ static int mcp251x_can_probe(struct spi_device *spi)
/* Allocate non-DMA buffers */
if (!mcp251x_enable_dma) {
priv->spi_tx_buf = kmalloc(SPI_TRANSFER_BUF_LEN, GFP_KERNEL);
priv->spi_tx_buf = devm_kzalloc(&spi->dev, SPI_TRANSFER_BUF_LEN,
GFP_KERNEL);
if (!priv->spi_tx_buf) {
ret = -ENOMEM;
goto error_tx_buf;
goto error_probe;
}
priv->spi_rx_buf = kmalloc(SPI_TRANSFER_BUF_LEN, GFP_KERNEL);
priv->spi_rx_buf = devm_kzalloc(&spi->dev, SPI_TRANSFER_BUF_LEN,
GFP_KERNEL);
if (!priv->spi_rx_buf) {
ret = -ENOMEM;
goto error_rx_buf;
goto error_probe;
}
}
@ -1107,12 +1109,6 @@ static int mcp251x_can_probe(struct spi_device *spi)
return ret;
error_probe:
if (!mcp251x_enable_dma)
kfree(priv->spi_rx_buf);
error_rx_buf:
if (!mcp251x_enable_dma)
kfree(priv->spi_tx_buf);
error_tx_buf:
if (mcp251x_enable_dma)
dma_free_coherent(&spi->dev, PAGE_SIZE,
priv->spi_tx_buf, priv->spi_tx_dma);
@ -1135,9 +1131,6 @@ static int mcp251x_can_remove(struct spi_device *spi)
if (mcp251x_enable_dma) {
dma_free_coherent(&spi->dev, PAGE_SIZE,
priv->spi_tx_buf, priv->spi_tx_dma);
} else {
kfree(priv->spi_tx_buf);
kfree(priv->spi_rx_buf);
}
mcp251x_power_enable(priv->power, 0);