[PATCH v2 3/5] usbnet: smsc95xx: fix memory leak in smsc95xx_suspend
From: Ming Lei <hidden>
Date: 2012-11-04 11:16:31
Subsystem:
networking drivers, the rest, usb networking drivers, usb smsc95xx ethernet driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Steve Glendinning
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. Cc: Steve Glendinning <steve.glendinning-nksJyM/082jR7s880joybQ@public.gmane.org> Signed-off-by: Ming Lei <redacted> --- drivers/net/usb/smsc95xx.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 46cd784..f1f473f 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");
@@ -1131,6 +1135,8 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message) 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]); check_warn_return(ret, "Error writing WUFF");
--
1.7.9.5
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