staging: rtl8192u: propagate errors in write_nic_byte_E

Propagate errors from  kzalloc and usb_control_msg and change the
return type of write_nic_byte_E from void to int.

Signed-off-by: Salah Triki <salah.triki@acm.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8192u/r8192U.h b/drivers/staging/rtl8192u/r8192U.h
index da9b92b..e0abcf5 100644 (file)
--- a/drivers/staging/rtl8192u/r8192U.h
+++ b/drivers/staging/rtl8192u/r8192U.h
@@ -1130,7 +1130,7 @@ int read_nic_byte_E(struct net_device *dev, int x, u8 *data);
 int read_nic_dword(struct net_device *dev, int x, u32 *data);
 int read_nic_word(struct net_device *dev, int x, u16 *data);
 int write_nic_byte(struct net_device *dev, int x, u8 y);
-void write_nic_byte_E(struct net_device *dev, int x, u8 y);
+int write_nic_byte_E(struct net_device *dev, int x, u8 y);
 void write_nic_word(struct net_device *dev, int x, u16 y);
 void write_nic_dword(struct net_device *dev, int x, u32 y);
 void force_pci_posting(struct net_device *dev);

diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index 30c87c2..675e898 100644 (file)
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -253,7 +253,7 @@ u32 read_cam(struct net_device *dev, u8 addr)
        return data;
 }
 
-void write_nic_byte_E(struct net_device *dev, int indx, u8 data)
+int write_nic_byte_E(struct net_device *dev, int indx, u8 data)
 {
        int status;
        struct r8192_priv *priv = (struct r8192_priv *)ieee80211_priv(dev);
@@ -261,7 +261,7 @@ void write_nic_byte_E(struct net_device *dev, int indx, u8 data)
        u8 *usbdata = kzalloc(sizeof(data), GFP_KERNEL);
 
        if (!usbdata)
-               return;
+               return -ENOMEM;
        *usbdata = data;
 
        status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
@@ -269,9 +269,12 @@ void write_nic_byte_E(struct net_device *dev, int indx, u8 data)
                                 indx | 0xfe00, 0, usbdata, 1, HZ / 2);
        kfree(usbdata);
 
-       if (status < 0)
+       if (status < 0){
                netdev_err(dev, "write_nic_byte_E TimeOut! status: %d\n",
                           status);
+               return status;
+       }
+       return 0;
 }
 
 int read_nic_byte_E(struct net_device *dev, int indx, u8 *data)