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media: usbvision: Adjust eight checks for null pointers

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The script “checkpatch.pl” pointed information out like the following.

Comparison to NULL could be written !…

Thus fix the affected source code places.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Markus Elfring 2017-08-26 16:16:52 -04:00 committed by Mauro Carvalho Chehab
parent 3e7e9755c9
commit c4cdcf9f1e
1 changed files with 8 additions and 8 deletions
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16
drivers/media/usb/usbvision/usbvision-video.c
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@ -904,7 +904,7 @@ static ssize_t usbvision_read(struct file *file, char __user *buf,
PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
(unsigned long)count, noblock);
if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
if (!USBVISION_IS_OPERATIONAL(usbvision) || !buf)
return -EFAULT;
/* This entry point is compatible with the mmap routines
@ -1234,7 +1234,7 @@ static void usbvision_vdev_init(struct usb_usbvision *usbvision,
{
struct usb_device *usb_dev = usbvision->dev;
if (usb_dev == NULL) {
if (!usb_dev) {
dev_err(&usbvision->dev->dev,
"%s: usbvision->dev is not set\n", __func__);
return;
@ -1320,7 +1320,7 @@ static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
struct usb_usbvision *usbvision;
usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
if (usbvision == NULL)
if (!usbvision)
return NULL;
usbvision->dev = dev;
@ -1334,7 +1334,7 @@ static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
/* prepare control urb for control messages during interrupts */
usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
if (usbvision->ctrl_urb == NULL)
if (!usbvision->ctrl_urb)
goto err_unreg;
return usbvision;
@ -1380,7 +1380,7 @@ static void usbvision_configure_video(struct usb_usbvision *usbvision)
{
int model;
if (usbvision == NULL)
if (!usbvision)
return;
model = usbvision->dev_model;
@ -1474,7 +1474,7 @@ static int usbvision_probe(struct usb_interface *intf,
}
usbvision = usbvision_alloc(dev, intf);
if (usbvision == NULL) {
if (!usbvision) {
dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
ret = -ENOMEM;
goto err_usb;
@ -1494,7 +1494,7 @@ static int usbvision_probe(struct usb_interface *intf,
usbvision->num_alt = uif->num_altsetting;
PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
if (usbvision->alt_max_pkt_size == NULL) {
if (!usbvision->alt_max_pkt_size) {
ret = -ENOMEM;
goto err_pkt;
}
@ -1565,7 +1565,7 @@ static void usbvision_disconnect(struct usb_interface *intf)
PDEBUG(DBG_PROBE, "");
if (usbvision == NULL) {
if (!usbvision) {
pr_err("%s: usb_get_intfdata() failed\n", __func__);
return;
}