@@ -6,6 +6,8 @@
* License terms: GNU General Public License (GPL) version 2.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME fmt
+
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
@@ -1127,21 +1129,7 @@ static int cfhsi_xmit(struct sk_buff *skb, struct net_device *dev)
return 0;
}
-static int cfhsi_open(struct net_device *dev)
-{
- return 0;
-}
-
-static int cfhsi_close(struct net_device *dev)
-{
- return 0;
-}
-
-static const struct net_device_ops cfhsi_ops = {
- .ndo_open = cfhsi_open,
- .ndo_stop = cfhsi_close,
- .ndo_start_xmit = cfhsi_xmit
-};
+static const struct net_device_ops cfhsi_ops;
static void cfhsi_setup(struct net_device *dev)
{
@@ -1167,7 +1155,7 @@ int cfhsi_probe(struct platform_device *pdev)
{
struct cfhsi *cfhsi = NULL;
struct net_device *ndev;
- struct cfhsi_dev *dev;
+
int res;
ndev = alloc_netdev(sizeof(struct cfhsi), "cfhsi%d", cfhsi_setup);
@@ -1178,6 +1166,34 @@ int cfhsi_probe(struct platform_device *pdev)
cfhsi->ndev = ndev;
cfhsi->pdev = pdev;
+ /* Assign the HSI device. */
+ cfhsi->dev = pdev->dev.platform_data;
+
+ /* Assign the driver to this HSI device. */
+ cfhsi->dev->drv = &cfhsi->drv;
+
+ /* Register network device. */
+ res = register_netdev(ndev);
+ if (res) {
+ dev_err(&ndev->dev, "%s: Registration error: %d.\n",
+ __func__, res);
+ free_netdev(ndev);
+ }
+ /* Add CAIF HSI device to list. */
+ spin_lock(&cfhsi_list_lock);
+ list_add_tail(&cfhsi->list, &cfhsi_list);
+ spin_unlock(&cfhsi_list_lock);
+
+ return res;
+}
+
+static int cfhsi_open(struct net_device *ndev)
+{
+ struct cfhsi *cfhsi = netdev_priv(ndev);
+ int res;
+
+ clear_bit(CFHSI_SHUTDOWN, &cfhsi->bits);
+
/* Initialize state vaiables. */
cfhsi->tx_state = CFHSI_TX_STATE_IDLE;
cfhsi->rx_state.state = CFHSI_RX_STATE_DESC;
@@ -1187,12 +1203,6 @@ int cfhsi_probe(struct platform_device *pdev)
cfhsi->q_low_mark = LOW_WATER_MARK;
cfhsi->q_high_mark = HIGH_WATER_MARK;
- /* Assign the HSI device. */
- dev = (struct cfhsi_dev *)pdev->dev.platform_data;
- cfhsi->dev = dev;
-
- /* Assign the driver to this HSI device. */
- dev->drv = &cfhsi->drv;
/*
* Allocate a TX buffer with the size of a HSI packet descriptors
@@ -1260,9 +1270,9 @@ int cfhsi_probe(struct platform_device *pdev)
clear_bit(CFHSI_AWAKE, &cfhsi->bits);
/* Create work thread. */
- cfhsi->wq = create_singlethread_workqueue(pdev->name);
+ cfhsi->wq = create_singlethread_workqueue(cfhsi->pdev->name);
if (!cfhsi->wq) {
- dev_err(&ndev->dev, "%s: Failed to create work queue.\n",
+ dev_err(&cfhsi->ndev->dev, "%s: Failed to create work queue.\n",
__func__);
res = -ENODEV;
goto err_create_wq;
@@ -1286,11 +1296,6 @@ int cfhsi_probe(struct platform_device *pdev)
cfhsi->aggregation_timer.data = (unsigned long)cfhsi;
cfhsi->aggregation_timer.function = cfhsi_aggregation_tout;
- /* Add CAIF HSI device to list. */
- spin_lock(&cfhsi_list_lock);
- list_add_tail(&cfhsi->list, &cfhsi_list);
- spin_unlock(&cfhsi_list_lock);
-
/* Activate HSI interface. */
res = cfhsi->dev->cfhsi_up(cfhsi->dev);
if (res) {
@@ -1303,15 +1308,7 @@ int cfhsi_probe(struct platform_device *pdev)
/* Flush FIFO */
res = cfhsi_flush_fifo(cfhsi);
if (res) {
- dev_err(&ndev->dev, "%s: Can't flush FIFO: %d.\n",
- __func__, res);
- goto err_net_reg;
- }
-
- /* Register network device. */
- res = register_netdev(ndev);
- if (res) {
- dev_err(&ndev->dev, "%s: Registration error: %d.\n",
+ dev_err(&cfhsi->ndev->dev, "%s: Can't flush FIFO: %d.\n",
__func__, res);
goto err_net_reg;
}
@@ -1328,13 +1325,12 @@ int cfhsi_probe(struct platform_device *pdev)
err_alloc_rx:
kfree(cfhsi->tx_buf);
err_alloc_tx:
- free_netdev(ndev);
-
return res;
}
-static void cfhsi_shutdown(struct cfhsi *cfhsi)
+static int cfhsi_close(struct net_device *ndev)
{
+ struct cfhsi *cfhsi = netdev_priv(ndev);
u8 *tx_buf, *rx_buf, *flip_buf;
/* going to shutdown driver */
@@ -1364,15 +1360,19 @@ static void cfhsi_shutdown(struct cfhsi *cfhsi)
/* Deactivate interface */
cfhsi->dev->cfhsi_down(cfhsi->dev);
- /* Finally unregister the network device. */
- unregister_netdev(cfhsi->ndev);
-
/* Free buffers. */
kfree(tx_buf);
kfree(rx_buf);
kfree(flip_buf);
+ return 0;
}
+static const struct net_device_ops cfhsi_ops = {
+ .ndo_open = cfhsi_open,
+ .ndo_stop = cfhsi_close,
+ .ndo_start_xmit = cfhsi_xmit
+};
+
int cfhsi_remove(struct platform_device *pdev)
{
struct list_head *list_node;
@@ -1389,10 +1389,6 @@ int cfhsi_remove(struct platform_device *pdev)
/* Remove from list. */
list_del(list_node);
spin_unlock(&cfhsi_list_lock);
-
- /* Shutdown driver. */
- cfhsi_shutdown(cfhsi);
-
return 0;
}
}
@@ -1423,8 +1419,7 @@ static void __exit cfhsi_exit_module(void)
list_del(list_node);
spin_unlock(&cfhsi_list_lock);
- /* Shutdown driver. */
- cfhsi_shutdown(cfhsi);
+ unregister_netdevice(cfhsi->ndev);
spin_lock(&cfhsi_list_lock);
}
@@ -1449,8 +1444,6 @@ static int __init cfhsi_init_module(void)
goto err_dev_register;
}
- return result;
-
err_dev_register:
return result;
}
Do the initialization of the HSI interface when the interface is opened, instead of upon registration. When the interface is closed the HSI interface is de-initialized, allowing other modules to use the HSI interface. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> --- Hi Dave, This patch does not apply cleanly on net-next, but depends on the bug-fix patch intended for 3.4: caif-hsi: Free flip_buffer at shutdown I hope this don't cause trouble for you. Thanks, Sjur drivers/net/caif/caif_hsi.c | 97 ++++++++++++++++++++----------------------- 1 files changed, 45 insertions(+), 52 deletions(-)