If current_urb is NULL it should not be dereferenced.
The problem was indicated by cppcheck.
Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
drivers/serial/usbtty.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/serial/usbtty.c b/drivers/serial/usbtty.c
index 2e19813643..29799dce93 100644
--- a/drivers/serial/usbtty.c
+++ b/drivers/serial/usbtty.c
@@ -850,6 +850,13 @@ static int write_buffer (circbuf_t * buf)
struct urb *current_urb = NULL;
current_urb = next_urb (device_instance, endpoint);
+
+ if (!current_urb) {
+ TTYERR ("current_urb is NULL, buf->size %d\n",
+ buf->size);
+ return 0;
+ }
+
/* TX data still exists - send it now
*/
if(endpoint->sent < current_urb->actual_length){
@@ -871,12 +878,6 @@ static int write_buffer (circbuf_t * buf)
*/
while (buf->size > 0) {
- if (!current_urb) {
- TTYERR ("current_urb is NULL, buf->size %d\n",
- buf->size);
- return total;
- }
-
dest = (char*)current_urb->buffer +
current_urb->actual_length;
--
2.11.0
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