caif-spi: Bugfix for dump upon device removal
Fix dump upon device removal, by moving deinitialization from platform-device-remove to network-interface-uninit. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Erwan Bracq
David S. Miller
parent
9e998a7550
commit
d5f43c1ea4
|
|
@ -226,7 +226,7 @@ static ssize_t dbgfs_frame(struct file *file, char __user *user_buf,
|
|||
"Tx data (Len: %d):\n", cfspi->tx_cpck_len);
|
||||
|
||||
len += print_frame((buf + len), (DEBUGFS_BUF_SIZE - len),
|
||||
cfspi->xfer.va_tx,
|
||||
cfspi->xfer.va_tx[0],
|
||||
(cfspi->tx_cpck_len + SPI_CMD_SZ), 100);
|
||||
|
||||
len += snprintf((buf + len), (DEBUGFS_BUF_SIZE - len),
|
||||
|
|
@ -599,48 +599,11 @@ static int cfspi_close(struct net_device *dev)
|
|||
netif_stop_queue(dev);
|
||||
return 0;
|
||||
}
|
||||
static const struct net_device_ops cfspi_ops = {
|
||||
.ndo_open = cfspi_open,
|
||||
.ndo_stop = cfspi_close,
|
||||
.ndo_start_xmit = cfspi_xmit
|
||||
};
|
||||
|
||||
static void cfspi_setup(struct net_device *dev)
|
||||
static int cfspi_init(struct net_device *dev)
|
||||
{
|
||||
int res = 0;
|
||||
struct cfspi *cfspi = netdev_priv(dev);
|
||||
dev->features = 0;
|
||||
dev->netdev_ops = &cfspi_ops;
|
||||
dev->type = ARPHRD_CAIF;
|
||||
dev->flags = IFF_NOARP | IFF_POINTOPOINT;
|
||||
dev->tx_queue_len = 0;
|
||||
dev->mtu = SPI_MAX_PAYLOAD_SIZE;
|
||||
dev->destructor = free_netdev;
|
||||
skb_queue_head_init(&cfspi->qhead);
|
||||
skb_queue_head_init(&cfspi->chead);
|
||||
cfspi->cfdev.link_select = CAIF_LINK_HIGH_BANDW;
|
||||
cfspi->cfdev.use_frag = false;
|
||||
cfspi->cfdev.use_stx = false;
|
||||
cfspi->cfdev.use_fcs = false;
|
||||
cfspi->ndev = dev;
|
||||
}
|
||||
|
||||
int cfspi_spi_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct cfspi *cfspi = NULL;
|
||||
struct net_device *ndev;
|
||||
struct cfspi_dev *dev;
|
||||
int res;
|
||||
dev = (struct cfspi_dev *)pdev->dev.platform_data;
|
||||
|
||||
ndev = alloc_netdev(sizeof(struct cfspi),
|
||||
"cfspi%d", cfspi_setup);
|
||||
if (!ndev)
|
||||
return -ENOMEM;
|
||||
|
||||
cfspi = netdev_priv(ndev);
|
||||
netif_stop_queue(ndev);
|
||||
cfspi->ndev = ndev;
|
||||
cfspi->pdev = pdev;
|
||||
|
||||
/* Set flow info. */
|
||||
cfspi->flow_off_sent = 0;
|
||||
|
|
@ -656,16 +619,11 @@ int cfspi_spi_probe(struct platform_device *pdev)
|
|||
cfspi->slave_talked = false;
|
||||
}
|
||||
|
||||
/* Assign the SPI device. */
|
||||
cfspi->dev = dev;
|
||||
/* Assign the device ifc to this SPI interface. */
|
||||
dev->ifc = &cfspi->ifc;
|
||||
|
||||
/* Allocate DMA buffers. */
|
||||
cfspi->xfer.va_tx = dma_alloc(&cfspi->xfer.pa_tx);
|
||||
if (!cfspi->xfer.va_tx) {
|
||||
cfspi->xfer.va_tx[0] = dma_alloc(&cfspi->xfer.pa_tx[0]);
|
||||
if (!cfspi->xfer.va_tx[0]) {
|
||||
res = -ENODEV;
|
||||
goto err_dma_alloc_tx;
|
||||
goto err_dma_alloc_tx_0;
|
||||
}
|
||||
|
||||
cfspi->xfer.va_rx = dma_alloc(&cfspi->xfer.pa_rx);
|
||||
|
|
@ -714,6 +672,87 @@ int cfspi_spi_probe(struct platform_device *pdev)
|
|||
/* Schedule the work queue. */
|
||||
queue_work(cfspi->wq, &cfspi->work);
|
||||
|
||||
return 0;
|
||||
|
||||
err_create_wq:
|
||||
dma_free(cfspi->xfer.va_rx, cfspi->xfer.pa_rx);
|
||||
err_dma_alloc_rx:
|
||||
dma_free(cfspi->xfer.va_tx[0], cfspi->xfer.pa_tx[0]);
|
||||
err_dma_alloc_tx_0:
|
||||
return res;
|
||||
}
|
||||
|
||||
static void cfspi_uninit(struct net_device *dev)
|
||||
{
|
||||
struct cfspi *cfspi = netdev_priv(dev);
|
||||
|
||||
/* Remove from list. */
|
||||
spin_lock(&cfspi_list_lock);
|
||||
list_del(&cfspi->list);
|
||||
spin_unlock(&cfspi_list_lock);
|
||||
|
||||
cfspi->ndev = NULL;
|
||||
/* Free DMA buffers. */
|
||||
dma_free(cfspi->xfer.va_rx, cfspi->xfer.pa_rx);
|
||||
dma_free(cfspi->xfer.va_tx[0], cfspi->xfer.pa_tx[0]);
|
||||
set_bit(SPI_TERMINATE, &cfspi->state);
|
||||
wake_up_interruptible(&cfspi->wait);
|
||||
destroy_workqueue(cfspi->wq);
|
||||
/* Destroy debugfs directory and files. */
|
||||
dev_debugfs_rem(cfspi);
|
||||
return;
|
||||
}
|
||||
|
||||
static const struct net_device_ops cfspi_ops = {
|
||||
.ndo_open = cfspi_open,
|
||||
.ndo_stop = cfspi_close,
|
||||
.ndo_init = cfspi_init,
|
||||
.ndo_uninit = cfspi_uninit,
|
||||
.ndo_start_xmit = cfspi_xmit
|
||||
};
|
||||
|
||||
static void cfspi_setup(struct net_device *dev)
|
||||
{
|
||||
struct cfspi *cfspi = netdev_priv(dev);
|
||||
dev->features = 0;
|
||||
dev->netdev_ops = &cfspi_ops;
|
||||
dev->type = ARPHRD_CAIF;
|
||||
dev->flags = IFF_NOARP | IFF_POINTOPOINT;
|
||||
dev->tx_queue_len = 0;
|
||||
dev->mtu = SPI_MAX_PAYLOAD_SIZE;
|
||||
dev->destructor = free_netdev;
|
||||
skb_queue_head_init(&cfspi->qhead);
|
||||
skb_queue_head_init(&cfspi->chead);
|
||||
cfspi->cfdev.link_select = CAIF_LINK_HIGH_BANDW;
|
||||
cfspi->cfdev.use_frag = false;
|
||||
cfspi->cfdev.use_stx = false;
|
||||
cfspi->cfdev.use_fcs = false;
|
||||
cfspi->ndev = dev;
|
||||
}
|
||||
|
||||
int cfspi_spi_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct cfspi *cfspi = NULL;
|
||||
struct net_device *ndev;
|
||||
struct cfspi_dev *dev;
|
||||
int res;
|
||||
dev = (struct cfspi_dev *)pdev->dev.platform_data;
|
||||
|
||||
ndev = alloc_netdev(sizeof(struct cfspi),
|
||||
"cfspi%d", cfspi_setup);
|
||||
if (!dev)
|
||||
return -ENODEV;
|
||||
|
||||
cfspi = netdev_priv(ndev);
|
||||
netif_stop_queue(ndev);
|
||||
cfspi->ndev = ndev;
|
||||
cfspi->pdev = pdev;
|
||||
|
||||
/* Assign the SPI device. */
|
||||
cfspi->dev = dev;
|
||||
/* Assign the device ifc to this SPI interface. */
|
||||
dev->ifc = &cfspi->ifc;
|
||||
|
||||
/* Register network device. */
|
||||
res = register_netdev(ndev);
|
||||
if (res) {
|
||||
|
|
@ -723,15 +762,6 @@ int cfspi_spi_probe(struct platform_device *pdev)
|
|||
return res;
|
||||
|
||||
err_net_reg:
|
||||
dev_debugfs_rem(cfspi);
|
||||
set_bit(SPI_TERMINATE, &cfspi->state);
|
||||
wake_up_interruptible(&cfspi->wait);
|
||||
destroy_workqueue(cfspi->wq);
|
||||
err_create_wq:
|
||||
dma_free(cfspi->xfer.va_rx, cfspi->xfer.pa_rx);
|
||||
err_dma_alloc_rx:
|
||||
dma_free(cfspi->xfer.va_tx, cfspi->xfer.pa_tx);
|
||||
err_dma_alloc_tx:
|
||||
free_netdev(ndev);
|
||||
|
||||
return res;
|
||||
|
|
@ -739,34 +769,8 @@ int cfspi_spi_probe(struct platform_device *pdev)
|
|||
|
||||
int cfspi_spi_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct list_head *list_node;
|
||||
struct list_head *n;
|
||||
struct cfspi *cfspi = NULL;
|
||||
struct cfspi_dev *dev;
|
||||
|
||||
dev = (struct cfspi_dev *)pdev->dev.platform_data;
|
||||
spin_lock(&cfspi_list_lock);
|
||||
list_for_each_safe(list_node, n, &cfspi_list) {
|
||||
cfspi = list_entry(list_node, struct cfspi, list);
|
||||
/* Find the corresponding device. */
|
||||
if (cfspi->dev == dev) {
|
||||
/* Remove from list. */
|
||||
list_del(list_node);
|
||||
/* Free DMA buffers. */
|
||||
dma_free(cfspi->xfer.va_rx, cfspi->xfer.pa_rx);
|
||||
dma_free(cfspi->xfer.va_tx, cfspi->xfer.pa_tx);
|
||||
set_bit(SPI_TERMINATE, &cfspi->state);
|
||||
wake_up_interruptible(&cfspi->wait);
|
||||
destroy_workqueue(cfspi->wq);
|
||||
/* Destroy debugfs directory and files. */
|
||||
dev_debugfs_rem(cfspi);
|
||||
unregister_netdev(cfspi->ndev);
|
||||
spin_unlock(&cfspi_list_lock);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
spin_unlock(&cfspi_list_lock);
|
||||
return -ENODEV;
|
||||
/* Everything is done in cfspi_uninit(). */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit cfspi_exit_module(void)
|
||||
|
|
@ -777,7 +781,7 @@ static void __exit cfspi_exit_module(void)
|
|||
|
||||
list_for_each_safe(list_node, n, &cfspi_list) {
|
||||
cfspi = list_entry(list_node, struct cfspi, list);
|
||||
platform_device_unregister(cfspi->pdev);
|
||||
unregister_netdev(cfspi->ndev);
|
||||
}
|
||||
|
||||
/* Destroy sysfs files. */
|
||||
|
|
|
|||
|
|
@ -55,8 +55,8 @@
|
|||
struct cfspi_xfer {
|
||||
u16 tx_dma_len;
|
||||
u16 rx_dma_len;
|
||||
void *va_tx;
|
||||
dma_addr_t pa_tx;
|
||||
void *va_tx[2];
|
||||
dma_addr_t pa_tx[2];
|
||||
void *va_rx;
|
||||
dma_addr_t pa_rx;
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue