diff options
| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-09-05 07:57:19 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-09-05 07:57:19 +0200 |
| commit | e6c340171f0daaccc95b90abbeed2b837157ee11 (patch) | |
| tree | 843d4035be59bd791321910e52157ce527b3b4b3 /drivers/net/wireless/rtlwifi/usb.c | |
| parent | Input: tegra - move platform data header (diff) | |
| parent | Linux 3.6-rc4 (diff) | |
| download | linux-e6c340171f0daaccc95b90abbeed2b837157ee11.tar.xz linux-e6c340171f0daaccc95b90abbeed2b837157ee11.zip | |
Merge tag 'v3.6-rc4' into next
Linux 3.6-rc4
# gpg: Signature made Sat 01 Sep 2012 10:40:33 AM PDT using RSA key ID 00411886
# gpg: Good signature from "Linus Torvalds <torvalds@linux-foundation.org>"
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 a6049d7d51b3..aa970fc18a21 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); |