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can: m_can: Move allocation of net device to probe 

With the version no longer required to allocate the net device, it can
be moved to probe and the alloc_m_can_dev() function can be simplified.

Therefore, move the allocation of net device to probe and change
alloc_m_can_dev() to setup_m_can_dev().

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Faiz Abbas 2018-01-16 17:07:12 +05:30 committed by Marc Kleine-Budde
parent b25abca6aa
commit 5e520edd91
1 changed files with 13 additions and 17 deletions
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30
drivers/net/can/m_can/m_can.c
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@ -1247,25 +1247,20 @@ static bool m_can_niso_supported(const struct m_can_priv *priv)
return !niso_timeout;
}
static struct net_device *alloc_m_can_dev(struct platform_device *pdev,
void __iomem *addr, u32 tx_fifo_size)
static int m_can_dev_setup(struct platform_device *pdev, struct net_device *dev,
void __iomem *addr)
{
struct net_device *dev;
struct m_can_priv *priv;
int m_can_version;
m_can_version = m_can_check_core_release(addr);
/* return if unsupported version */
if (!m_can_version) {
dev = NULL;
goto return_dev;
dev_err(&pdev->dev, "Unsupported version number: %2d",
m_can_version);
return -EINVAL;
}
dev = alloc_candev(sizeof(*priv), tx_fifo_size);
if (!dev) {
dev = NULL;
goto return_dev;
}
priv = netdev_priv(dev);
netif_napi_add(dev, &priv->napi, m_can_poll, M_CAN_NAPI_WEIGHT);
@ -1307,16 +1302,12 @@ static struct net_device *alloc_m_can_dev(struct platform_device *pdev,
: 0);
break;
default:
/* Unsupported device: free candev */
free_m_can_dev(dev);
dev_err(&pdev->dev, "Unsupported version number: %2d",
priv->version);
dev = NULL;
break;
return -EINVAL;
}
return_dev:
return dev;
return 0;
}
static int m_can_open(struct net_device *dev)
@ -1656,11 +1647,16 @@ static int m_can_plat_probe(struct platform_device *pdev)
tx_fifo_size = mram_config_vals[7];
/* allocate the m_can device */
dev = alloc_m_can_dev(pdev, addr, tx_fifo_size);
dev = alloc_candev(sizeof(*priv), tx_fifo_size);
if (!dev) {
ret = -ENOMEM;
goto disable_cclk_ret;
}
ret = m_can_dev_setup(pdev, dev, addr);
if (ret)
goto failed_free_dev;
priv = netdev_priv(dev);
dev->irq = irq;
priv->device = &pdev->dev;