staging: rtl8192u: propagate errors in write_nic_byte
Propagate errors from kzalloc and usb_control_msg and change the
return type of write_nic_byte 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 ee1c722..da9b92b 100644
--- a/drivers/staging/rtl8192u/r8192U.h
+++ b/drivers/staging/rtl8192u/r8192U.h
@@ -1129,7 +1129,7 @@
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);
-void write_nic_byte(struct net_device *dev, int x, u8 y);
+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);
void write_nic_word(struct net_device *dev, int x, u16 y);
void write_nic_dword(struct net_device *dev, int x, u32 y);
diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index 74cf9e7..30c87c2 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -299,7 +299,7 @@
}
/* as 92U has extend page from 4 to 16, so modify functions below. */
-void write_nic_byte(struct net_device *dev, int indx, u8 data)
+int write_nic_byte(struct net_device *dev, int indx, u8 data)
{
int status;
@@ -308,7 +308,7 @@
u8 *usbdata = kzalloc(sizeof(data), GFP_KERNEL);
if (!usbdata)
- return;
+ return -ENOMEM;
*usbdata = data;
status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
@@ -317,8 +317,12 @@
usbdata, 1, HZ / 2);
kfree(usbdata);
- if (status < 0)
+ if (status < 0) {
netdev_err(dev, "write_nic_byte TimeOut! status: %d\n", status);
+ return status;
+ }
+
+ return 0;
}