kstrdup() returns NULL if some internal memory errors happen, it is
better to check the return value of it. Since the return type of
dvb_usbv2_disconnect() is void, so only raise the error info.
Signed-off-by: xkernel <xkernel.wang@xxxxxxxxxxx>
---
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
index f1c79f3..a43a310 100644
--- a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
+++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
@@ -1009,6 +1009,9 @@ void dvb_usbv2_disconnect(struct usb_interface *intf)
const char *devname = kstrdup(dev_name(&d->udev->dev), GFP_KERNEL);
const char *drvname = d->name;
+ if (!devname)
+ dev_err(&d->udev->dev, "%s: kstrdup() failed\n", KBUILD_MODNAME);
+
dev_dbg(&d->udev->dev, "%s: bInterfaceNumber=%d\n", __func__,
intf->cur_altsetting->desc.bInterfaceNumber);
@@ -1023,9 +1026,14 @@ void dvb_usbv2_disconnect(struct usb_interface *intf)
kfree(d->priv);
kfree(d);
- pr_info("%s: '%s:%s' successfully deinitialized and disconnected\n",
- KBUILD_MODNAME, drvname, devname);
- kfree(devname);
+ if (devname) {
+ pr_info("%s: '%s:%s' successfully deinitialized and disconnected\n",
+ KBUILD_MODNAME, drvname, devname);
+ kfree(devname);
+ } else {
+ pr_info("%s: '%s:UNKNOWN' successfully deinitialized and disconnected\n",
+ KBUILD_MODNAME, drvname);
+ }
}
EXPORT_SYMBOL(dvb_usbv2_disconnect);
--
