openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

mwifiex: use USB core's soft_unbind option 

This option allows driver to finish pending operations in
disconnect handler by not killing URBs after usb_deregister
call.

We will get rid of global pointer 'usb_card' by moving code
from cleanup_module() to disconnect(). This will help to match
with our handling for SDIO and PCIe interfaces.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Amitkumar Karwar 2014-04-14 15:32:54 -07:00 committed by John W. Linville
parent 5af3fae335
commit 3fffd7c17c
1 changed files with 31 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

64
drivers/net/wireless/mwifiex/usb.c
View File

@ -22,9 +22,9 @@
#define USB_VERSION "1.0"
static u8 user_rmmod;
static struct mwifiex_if_ops usb_ops;
static struct semaphore add_remove_card_sem;
static struct usb_card_rec *usb_card;
static struct usb_device_id mwifiex_usb_table[] = {
/* 8797 */
@ -532,28 +532,43 @@ static int mwifiex_usb_resume(struct usb_interface *intf)
static void mwifiex_usb_disconnect(struct usb_interface *intf)
{
struct usb_card_rec *card = usb_get_intfdata(intf);
struct mwifiex_adapter *adapter;
if (!card) {
pr_err("%s: card is NULL\n", __func__);
if (!card || !card->adapter) {
pr_err("%s: card or card->adapter is NULL\n", __func__);
return;
}
adapter = card->adapter;
if (!adapter->priv_num)
return;
/* In case driver is removed when asynchronous FW downloading is
* in progress
*/
wait_for_completion(&adapter->fw_load);
if (user_rmmod) {
#ifdef CONFIG_PM
if (adapter->is_suspended)
mwifiex_usb_resume(intf);
#endif
mwifiex_deauthenticate_all(adapter);
mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
MWIFIEX_BSS_ROLE_ANY),
MWIFIEX_FUNC_SHUTDOWN);
}
mwifiex_usb_free(card);
if (card->adapter) {
struct mwifiex_adapter *adapter = card->adapter;
if (!adapter->priv_num)
return;
dev_dbg(adapter->dev, "%s: removing card\n", __func__);
mwifiex_remove_card(adapter, &add_remove_card_sem);
}
dev_dbg(adapter->dev, "%s: removing card\n", __func__);
mwifiex_remove_card(adapter, &add_remove_card_sem);
usb_set_intfdata(intf, NULL);
usb_put_dev(interface_to_usbdev(intf));
kfree(card);
usb_card = NULL;
return;
}
@ -565,6 +580,7 @@ static struct usb_driver mwifiex_usb_driver = {
.id_table = mwifiex_usb_table,
.suspend = mwifiex_usb_suspend,
.resume = mwifiex_usb_resume,
.soft_unbind = 1,
};
static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter)
@ -762,7 +778,6 @@ static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
card->adapter = adapter;
adapter->dev = &card->udev->dev;
usb_card = card;
switch (le16_to_cpu(card->udev->descriptor.idProduct)) {
case USB8897_PID_1:
@ -1025,25 +1040,8 @@ static void mwifiex_usb_cleanup_module(void)
if (!down_interruptible(&add_remove_card_sem))
up(&add_remove_card_sem);
if (usb_card && usb_card->adapter) {
struct mwifiex_adapter *adapter = usb_card->adapter;
/* In case driver is removed when asynchronous FW downloading is
* in progress
*/
wait_for_completion(&adapter->fw_load);
#ifdef CONFIG_PM
if (adapter->is_suspended)
mwifiex_usb_resume(usb_card->intf);
#endif
mwifiex_deauthenticate_all(adapter);
mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
MWIFIEX_BSS_ROLE_ANY),
MWIFIEX_FUNC_SHUTDOWN);
}
/* set the flag as user is removing this module */
user_rmmod = 1;
usb_deregister(&mwifiex_usb_driver);
}