From: Dongliang Mu <mudongliangabcd@xxxxxxxxx>
Smatch reports the following error: uninitialized symbol 'rlen'
drivers/usb/misc/uss720.c:514 parport_uss720_epp_write_data() error
drivers/usb/misc/uss720.c:575 parport_uss720_ecp_write_data() error
drivers/usb/misc/uss720.c:593 parport_uss720_ecp_read_data() error
drivers/usb/misc/uss720.c:626 parport_uss720_write_compat() error
The root cause is, the failure of usb_bulk_msg leads to the
uninitialized variable rlen in printk function.
Fix this by initializing rlen with zero.
Signed-off-by: Dongliang Mu <mudongliangabcd@xxxxxxxxx>
---
drivers/usb/misc/uss720.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c
index 0be8efcda15d..b00d92db5dfd 100644
--- a/drivers/usb/misc/uss720.c
+++ b/drivers/usb/misc/uss720.c
@@ -502,7 +502,7 @@ static size_t parport_uss720_epp_write_data(struct parport *pp, const void *buf,
#else
struct parport_uss720_private *priv = pp->private_data;
struct usb_device *usbdev = priv->usbdev;
- int rlen;
+ int rlen = 0;
int i;
if (!usbdev)
@@ -563,7 +563,7 @@ static size_t parport_uss720_ecp_write_data(struct parport *pp, const void *buff
{
struct parport_uss720_private *priv = pp->private_data;
struct usb_device *usbdev = priv->usbdev;
- int rlen;
+ int rlen = 0;
int i;
if (!usbdev)
@@ -581,7 +581,7 @@ static size_t parport_uss720_ecp_read_data(struct parport *pp, void *buffer, siz
{
struct parport_uss720_private *priv = pp->private_data;
struct usb_device *usbdev = priv->usbdev;
- int rlen;
+ int rlen = 0;
int i;
if (!usbdev)
@@ -614,7 +614,7 @@ static size_t parport_uss720_write_compat(struct parport *pp, const void *buffer
{
struct parport_uss720_private *priv = pp->private_data;
struct usb_device *usbdev = priv->usbdev;
- int rlen;
+ int rlen = 0;
int i;
if (!usbdev)
--
2.35.1
