diff options
| author | Ming Lei <ming.lei@canonical.com> | 2012-11-06 04:53:06 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-11-07 03:53:38 -0500 |
| commit | 06a221be022c2cc98a48e0808a4ef0dc8f0b3a34 (patch) | |
| tree | 935fe2fc77739a73ddc5d7c17480c55c628da98d | |
| parent | 47bbea4171025c96e80f7ded7595697a2cb56552 (diff) | |
| download | linux-06a221be022c2cc98a48e0808a4ef0dc8f0b3a34.tar.bz2 | |
usbnet: smsc95xx: fix memory leak in smsc95xx_suspend
This patch fixes memory leak in smsc95xx_suspend.
Also, it isn't necessary to bother mm to allocate 8bytes/16byte,
and we can use stack variable safely.
Acked-By: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/usb/smsc95xx.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index 46cd784467d5..05ead8a3335c 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -1070,11 +1070,15 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message) if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { u32 *filter_mask = kzalloc(32, GFP_KERNEL); - u32 *command = kzalloc(2, GFP_KERNEL); - u32 *offset = kzalloc(2, GFP_KERNEL); - u32 *crc = kzalloc(4, GFP_KERNEL); + u32 command[2]; + u32 offset[2]; + u32 crc[4]; int i, filter = 0; + memset(command, 0, sizeof(command)); + memset(offset, 0, sizeof(offset)); + memset(crc, 0, sizeof(crc)); + if (pdata->wolopts & WAKE_BCAST) { const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; netdev_info(dev->net, "enabling broadcast detection"); @@ -1128,8 +1132,11 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message) for (i = 0; i < (pdata->wuff_filter_count * 4); i++) { ret = smsc95xx_write_reg(dev, WUFF, filter_mask[i]); + if (ret < 0) + kfree(filter_mask); check_warn_return(ret, "Error writing WUFF"); } + kfree(filter_mask); for (i = 0; i < (pdata->wuff_filter_count / 4); i++) { ret = smsc95xx_write_reg(dev, WUFF, command[i]); |