From 06a221be022c2cc98a48e0808a4ef0dc8f0b3a34 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 6 Nov 2012 04:53:06 +0000 Subject: 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 Signed-off-by: Ming Lei Signed-off-by: David S. Miller diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index 46cd784..05ead8a 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]); -- cgit v0.10.2