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Date: Thu, 3 Nov 2022 07:12:42 -0600
From: Shuah Khan <skhan@...uxfoundation.org>
To: shuah@...nel.org, valentina.manea.m@...il.com
Cc: Shuah Khan <skhan@...uxfoundation.org>, gregkh@...uxfoundation.org,
linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] usb/usbip: fix uninitialized variables errors
Fix uninitialized variable errors reported by cppcheck. One example
below.
usbip/stub_main.c:284:10: error: Uninitialized variables: priv.seqnum, priv.sdev, priv.urbs, priv.sgl, priv.num_urbs, priv.completed_urbs, priv.urb_status, priv.unlinking [uninitvar]
return priv;
Signed-off-by: Shuah Khan <skhan@...uxfoundation.org>
---
drivers/usb/usbip/stub_main.c | 2 +-
drivers/usb/usbip/stub_rx.c | 4 ++--
drivers/usb/usbip/stub_tx.c | 4 ++--
drivers/usb/usbip/usbip_event.c | 2 +-
drivers/usb/usbip/vhci_hcd.c | 2 +-
drivers/usb/usbip/vhci_rx.c | 2 +-
drivers/usb/usbip/vhci_tx.c | 4 ++--
drivers/usb/usbip/vudc_dev.c | 2 +-
drivers/usb/usbip/vudc_rx.c | 2 +-
drivers/usb/usbip/vudc_transfer.c | 4 ++--
10 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/drivers/usb/usbip/stub_main.c b/drivers/usb/usbip/stub_main.c
index e8c3131a8543..e1248b971218 100644
--- a/drivers/usb/usbip/stub_main.c
+++ b/drivers/usb/usbip/stub_main.c
@@ -277,7 +277,7 @@ static DRIVER_ATTR_WO(rebind);
static struct stub_priv *stub_priv_pop_from_listhead(struct list_head *listhead)
{
- struct stub_priv *priv, *tmp;
+ struct stub_priv *priv = NULL, *tmp;
list_for_each_entry_safe(priv, tmp, listhead, list) {
list_del_init(&priv->list);
diff --git a/drivers/usb/usbip/stub_rx.c b/drivers/usb/usbip/stub_rx.c
index fc01b31bbb87..08e11948834b 100644
--- a/drivers/usb/usbip/stub_rx.c
+++ b/drivers/usb/usbip/stub_rx.c
@@ -206,7 +206,7 @@ static int stub_recv_cmd_unlink(struct stub_device *sdev,
{
int ret, i;
unsigned long flags;
- struct stub_priv *priv;
+ struct stub_priv *priv = NULL;
spin_lock_irqsave(&sdev->priv_lock, flags);
@@ -440,7 +440,7 @@ static void masking_bogus_flags(struct urb *urb)
static int stub_recv_xbuff(struct usbip_device *ud, struct stub_priv *priv)
{
- int ret;
+ int ret = 0;
int i;
for (i = 0; i < priv->num_urbs; i++) {
diff --git a/drivers/usb/usbip/stub_tx.c b/drivers/usb/usbip/stub_tx.c
index b1c2f6781cb3..3d3d2b5a680d 100644
--- a/drivers/usb/usbip/stub_tx.c
+++ b/drivers/usb/usbip/stub_tx.c
@@ -132,7 +132,7 @@ static void setup_ret_unlink_pdu(struct usbip_header *rpdu,
static struct stub_priv *dequeue_from_priv_tx(struct stub_device *sdev)
{
unsigned long flags;
- struct stub_priv *priv, *tmp;
+ struct stub_priv *priv = NULL, *tmp;
spin_lock_irqsave(&sdev->priv_lock, flags);
@@ -343,7 +343,7 @@ static int stub_send_ret_submit(struct stub_device *sdev)
static struct stub_unlink *dequeue_from_unlink_tx(struct stub_device *sdev)
{
unsigned long flags;
- struct stub_unlink *unlink, *tmp;
+ struct stub_unlink *unlink = NULL, *tmp;
spin_lock_irqsave(&sdev->priv_lock, flags);
diff --git a/drivers/usb/usbip/usbip_event.c b/drivers/usb/usbip/usbip_event.c
index 26513540bcdb..8d782c8d8893 100644
--- a/drivers/usb/usbip/usbip_event.c
+++ b/drivers/usb/usbip/usbip_event.c
@@ -143,7 +143,7 @@ void usbip_finish_eh(void)
void usbip_event_add(struct usbip_device *ud, unsigned long event)
{
- struct usbip_event *ue;
+ struct usbip_event *ue = NULL;
unsigned long flags;
if (ud->event & USBIP_EH_BYE)
diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index 233265550fc6..79503ffc3db8 100644
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -957,7 +957,7 @@ static void vhci_cleanup_unlink_list(struct vhci_device *vdev,
struct vhci_hcd *vhci_hcd = vdev_to_vhci_hcd(vdev);
struct usb_hcd *hcd = vhci_hcd_to_hcd(vhci_hcd);
struct vhci *vhci = vhci_hcd->vhci;
- struct vhci_unlink *unlink, *tmp;
+ struct vhci_unlink *unlink = NULL, *tmp;
unsigned long flags;
spin_lock_irqsave(&vhci->lock, flags);
diff --git a/drivers/usb/usbip/vhci_rx.c b/drivers/usb/usbip/vhci_rx.c
index 7f2d1c241559..8edb699aed23 100644
--- a/drivers/usb/usbip/vhci_rx.c
+++ b/drivers/usb/usbip/vhci_rx.c
@@ -12,7 +12,7 @@
/* get URB from transmitted urb queue. caller must hold vdev->priv_lock */
struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, __u32 seqnum)
{
- struct vhci_priv *priv, *tmp;
+ struct vhci_priv *priv = NULL, *tmp;
struct urb *urb = NULL;
int status;
diff --git a/drivers/usb/usbip/vhci_tx.c b/drivers/usb/usbip/vhci_tx.c
index 0ae40a13a9fe..78b96c915724 100644
--- a/drivers/usb/usbip/vhci_tx.c
+++ b/drivers/usb/usbip/vhci_tx.c
@@ -33,7 +33,7 @@ static void setup_cmd_submit_pdu(struct usbip_header *pdup, struct urb *urb)
static struct vhci_priv *dequeue_from_priv_tx(struct vhci_device *vdev)
{
- struct vhci_priv *priv, *tmp;
+ struct vhci_priv *priv = NULL, *tmp;
unsigned long flags;
spin_lock_irqsave(&vdev->priv_lock, flags);
@@ -168,7 +168,7 @@ static int vhci_send_cmd_submit(struct vhci_device *vdev)
static struct vhci_unlink *dequeue_from_unlink_tx(struct vhci_device *vdev)
{
- struct vhci_unlink *unlink, *tmp;
+ struct vhci_unlink *unlink = NULL, *tmp;
unsigned long flags;
spin_lock_irqsave(&vdev->priv_lock, flags);
diff --git a/drivers/usb/usbip/vudc_dev.c b/drivers/usb/usbip/vudc_dev.c
index 2bc428f2e261..ddf7e6f18439 100644
--- a/drivers/usb/usbip/vudc_dev.c
+++ b/drivers/usb/usbip/vudc_dev.c
@@ -90,7 +90,7 @@ static void nuke(struct vudc *udc, struct vep *ep)
static void stop_activity(struct vudc *udc)
{
int i;
- struct urbp *urb_p, *tmp;
+ struct urbp *urb_p = NULL, *tmp;
udc->address = 0;
diff --git a/drivers/usb/usbip/vudc_rx.c b/drivers/usb/usbip/vudc_rx.c
index d4a2f30a7580..a6ca27f10b68 100644
--- a/drivers/usb/usbip/vudc_rx.c
+++ b/drivers/usb/usbip/vudc_rx.c
@@ -63,7 +63,7 @@ static int v_recv_cmd_unlink(struct vudc *udc,
struct usbip_header *pdu)
{
unsigned long flags;
- struct urbp *urb_p;
+ struct urbp *urb_p = NULL;
spin_lock_irqsave(&udc->lock, flags);
list_for_each_entry(urb_p, &udc->urb_queue, urb_entry) {
diff --git a/drivers/usb/usbip/vudc_transfer.c b/drivers/usb/usbip/vudc_transfer.c
index 7e801fee33bf..fd5547f85de9 100644
--- a/drivers/usb/usbip/vudc_transfer.c
+++ b/drivers/usb/usbip/vudc_transfer.c
@@ -183,7 +183,7 @@ static int handle_control_request(struct vudc *udc, struct urb *urb,
static int transfer(struct vudc *udc,
struct urb *urb, struct vep *ep, int limit)
{
- struct vrequest *req;
+ struct vrequest *req = NULL;
int sent = 0;
top:
/* if there's no request queued, the device is NAKing; return */
@@ -303,7 +303,7 @@ static void v_timer(struct timer_list *t)
{
struct vudc *udc = from_timer(udc, t, tr_timer.timer);
struct transfer_timer *timer = &udc->tr_timer;
- struct urbp *urb_p, *tmp;
+ struct urbp *urb_p = NULL, *tmp;
unsigned long flags;
struct usb_ep *_ep;
struct vep *ep;
--
2.34.1
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