diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2012-07-25 14:33:45 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-07-25 14:35:04 +0200 |
| commit | 8cef081c71dd4e16a01a1e63cedab21eef8b5735 (patch) | |
| tree | b5b0fb5ab09dc60dee5fc8fd8e980359abbd1b1e /drivers/net/wireless/rtlwifi/usb.c | |
| parent | 3d55c29fb24286f350f04021bef2dd799e25dd20 (diff) | |
| parent | 9161c3b796a2841a9a7be3d9c9dd121269ce90e8 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fixes
The merge of the 'clk-for-linus' branch caused an automated
merge failure. Pull that in here so we can fix the problem.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/net/wireless/rtlwifi/usb.c')
| -rw-r--r-- | drivers/net/wireless/rtlwifi/usb.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/net/wireless/rtlwifi/usb.c b/drivers/net/wireless/rtlwifi/usb.c index a6049d7d51b..aa970fc18a2 100644 --- a/drivers/net/wireless/rtlwifi/usb.c +++ b/drivers/net/wireless/rtlwifi/usb.c @@ -131,15 +131,19 @@ static u32 _usb_read_sync(struct rtl_priv *rtlpriv, u32 addr, u16 len) u8 request; u16 wvalue; u16 index; - __le32 *data = &rtlpriv->usb_data[rtlpriv->usb_data_index]; + __le32 *data; + unsigned long flags; + spin_lock_irqsave(&rtlpriv->locks.usb_lock, flags); + if (++rtlpriv->usb_data_index >= RTL_USB_MAX_RX_COUNT) + rtlpriv->usb_data_index = 0; + data = &rtlpriv->usb_data[rtlpriv->usb_data_index]; + spin_unlock_irqrestore(&rtlpriv->locks.usb_lock, flags); request = REALTEK_USB_VENQT_CMD_REQ; index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */ wvalue = (u16)addr; _usbctrl_vendorreq_sync_read(udev, request, wvalue, index, data, len); - if (++rtlpriv->usb_data_index >= RTL_USB_MAX_RX_COUNT) - rtlpriv->usb_data_index = 0; return le32_to_cpu(*data); } @@ -951,6 +955,10 @@ int __devinit rtl_usb_probe(struct usb_interface *intf, GFP_KERNEL); if (!rtlpriv->usb_data) return -ENOMEM; + + /* this spin lock must be initialized early */ + spin_lock_init(&rtlpriv->locks.usb_lock); + rtlpriv->usb_data_index = 0; init_completion(&rtlpriv->firmware_loading_complete); SET_IEEE80211_DEV(hw, &intf->dev); |