USB: serial: fix up urb->status usage

Some of the usb-serial drivers are starting to use urb->status in ways
they should not be doing.  This fixes up some of them to prevent that.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 21 insertions, 17 deletions

diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
index e320972cb227..2314c6ae4fc2 100644
--- a/drivers/usb/serial/iuu_phoenix.c
+++ b/drivers/usb/serial/iuu_phoenix.c
@@ -190,10 +190,12 @@ static void iuu_rxcmd(struct urb *urb)
 {
         struct usb_serial_port *port = urb->context;
         int result;
+        int status = urb->status;
+
         dbg("%s - enter", __func__);
 
-        if (urb->status) {
-                dbg("%s - urb->status = %d", __func__, urb->status);
+        if (status) {
+                dbg("%s - status = %d", __func__, status);
                 /* error stop all */
                 return;
         }
@@ -245,10 +247,12 @@ static void iuu_update_status_callback(struct urb *urb)
         struct usb_serial_port *port = urb->context;
         struct iuu_private *priv = usb_get_serial_port_data(port);
         u8 *st;
+        int status = urb->status;
+
         dbg("%s - enter", __func__);
 
-        if (urb->status) {
-                dbg("%s - urb->status = %d", __func__, urb->status);
+        if (status) {
+                dbg("%s - status = %d", __func__, status);
                 /* error stop all */
                 return;
         }
@@ -274,9 +278,9 @@ static void iuu_status_callback(struct urb *urb)
 {
         struct usb_serial_port *port = urb->context;
         int result;
-        dbg("%s - enter", __func__);
+        int status = urb->status;
 
-        dbg("%s - urb->status = %d", __func__, urb->status);
+        dbg("%s - status = %d", __func__, status);
         usb_fill_bulk_urb(port->read_urb, port->serial->dev,
                           usb_rcvbulkpipe(port->serial->dev,
                                           port->bulk_in_endpointAddress),
@@ -618,11 +622,12 @@ static void read_buf_callback(struct urb *urb)
         struct usb_serial_port *port = urb->context;
         unsigned char *data = urb->transfer_buffer;
         struct tty_struct *tty;
-        dbg("%s - urb->status = %d", __func__, urb->status);
+        int status = urb->status;
 
-        if (urb->status) {
-                dbg("%s - urb->status = %d", __func__, urb->status);
-                if (urb->status == -EPROTO) {
+        dbg("%s - status = %d", __func__, status);
+
+        if (status) {
+                if (status == -EPROTO) {
                         /* reschedule needed */
                 }
                 return;
@@ -695,7 +700,7 @@ static void iuu_uart_read_callback(struct urb *urb)
         struct usb_serial_port *port = urb->context;
         struct iuu_private *priv = usb_get_serial_port_data(port);
         unsigned long flags;
-        int status;
+        int status = urb->status;
         int error = 0;
         int len = 0;
         unsigned char *data = urb->transfer_buffer;
@@ -703,8 +708,8 @@ static void iuu_uart_read_callback(struct urb *urb)
 
         dbg("%s - enter", __func__);
 
-        if (urb->status) {
-                dbg("%s - urb->status = %d", __func__, urb->status);
+        if (status) {
+                dbg("%s - status = %d", __func__, status);
                 /* error stop all */
                 return;
         }
@@ -782,12 +787,11 @@ static void read_rxcmd_callback(struct urb *urb)
 {
         struct usb_serial_port *port = urb->context;
         int result;
-        dbg("%s - enter", __func__);
+        int status = urb->status;
 
-        dbg("%s - urb->status = %d", __func__, urb->status);
+        dbg("%s - status = %d", __func__, status);
 
-        if (urb->status) {
-                dbg("%s - urb->status = %d", __func__, urb->status);
+        if (status) {
                 /* error stop all */
                 return;
         }