From: Suwan Kim <suwan.kim027@gmail.com>
To: shuah@kernel.org, valentina.manea.m@gmail.com,
gregkh@linuxfoundation.org
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
Suwan Kim <suwan.kim027@gmail.com>
Subject: [PATCH] usbip: Remove unnecessary null check
Date: Wed, 6 Mar 2019 00:11:10 +0900 [thread overview]
Message-ID: <20190305151110.4366-1-suwan.kim027@gmail.com> (raw)
"vdev" points to vhci_hcd->vdev[] array and vhci_hcd->vdev[] array
is not a pointer array but a structure array and it is already used
in vhci_urb_enqueue() and then passed to vhci_tx_urb() as an argument.
vhci_tx_urb() is not called except vhci_urb_enqueue(). So, "vdev"
can not be null pointer. This null check statement is meaningless.
Signed-off-by: Suwan Kim <suwan.kim027@gmail.com>
---
drivers/usb/usbip/vhci_hcd.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index f46ee1fefe02..667d9c0ec905 100644
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -654,15 +654,9 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
static void vhci_tx_urb(struct urb *urb, struct vhci_device *vdev)
{
struct vhci_priv *priv;
- struct vhci_hcd *vhci_hcd;
+ struct vhci_hcd *vhci_hcd = vdev_to_vhci_hcd(vdev);
unsigned long flags;
- if (!vdev) {
- pr_err("could not get virtual device");
- return;
- }
- vhci_hcd = vdev_to_vhci_hcd(vdev);
-
priv = kzalloc(sizeof(struct vhci_priv), GFP_ATOMIC);
if (!priv) {
usbip_event_add(&vdev->ud, VDEV_EVENT_ERROR_MALLOC);
--
2.20.1
next reply other threads:[~2019-03-05 15:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-05 15:11 Suwan Kim [this message]
2019-03-06 15:11 ` shuah
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