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hso: fix memory leak in hso_create_rfkill()

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When the rfkill interface was created, a buffer containing the name
of the rfkill node was allocated. This buffer was never freed when the
device disappears.

To fix the problem, we put the name given to rfkill_alloc() in
the hso_net structure.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Olivier Sobrie 2015-01-30 13:21:56 +01:00 committed by David S. Miller
parent 295fc56f46
commit 2e6d01ff75
1 changed files with 3 additions and 9 deletions
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12
drivers/net/usb/hso.c
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@ -153,6 +153,7 @@ struct hso_net {
struct hso_device *parent;
struct net_device *net;
struct rfkill *rfkill;
char name[8];
struct usb_endpoint_descriptor *in_endp;
struct usb_endpoint_descriptor *out_endp;
@ -2467,27 +2468,20 @@ static void hso_create_rfkill(struct hso_device *hso_dev,
{
struct hso_net *hso_net = dev2net(hso_dev);
struct device *dev = &hso_net->net->dev;
char *rfkn;
rfkn = kzalloc(20, GFP_KERNEL);
if (!rfkn)
dev_err(dev, "%s - Out of memory\n", __func__);
snprintf(rfkn, 20, "hso-%d",
snprintf(hso_net->name, sizeof(hso_net->name), "hso-%d",
interface->altsetting->desc.bInterfaceNumber);
hso_net->rfkill = rfkill_alloc(rfkn,
hso_net->rfkill = rfkill_alloc(hso_net->name,
&interface_to_usbdev(interface)->dev,
RFKILL_TYPE_WWAN,
&hso_rfkill_ops, hso_dev);
if (!hso_net->rfkill) {
dev_err(dev, "%s - Out of memory\n", __func__);
kfree(rfkn);
return;
}
if (rfkill_register(hso_net->rfkill) < 0) {
rfkill_destroy(hso_net->rfkill);
kfree(rfkn);
hso_net->rfkill = NULL;
dev_err(dev, "%s - Failed to register rfkill\n", __func__);
return;