[PATCH 5.9 291/757] net: wilc1000: clean up resource in error path of init mon interface

From: Greg Kroah-Hartman
Date: Tue Oct 27 2020 - 11:41:54 EST


From: Huang Guobin <huangguobin4@xxxxxxxxxx>

[ Upstream commit 55bd149978679742374c800e56e8f6bc74378bbe ]

The wilc_wfi_init_mon_int() forgets to clean up resource when
register_netdevice() failed. Add the missed call to fix it.
And the return value of netdev_priv can't be NULL, so remove
the unnecessary error handling.

Fixes: 588713006ea4 ("staging: wilc1000: avoid the use of 'wilc_wfi_mon' static variable")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Huang Guobin <huangguobin4@xxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20200917123019.206382-1-huangguobin4@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/microchip/wilc1000/mon.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/wireless/microchip/wilc1000/mon.c b/drivers/net/wireless/microchip/wilc1000/mon.c
index 358ac86013338..b5a1b65c087ca 100644
--- a/drivers/net/wireless/microchip/wilc1000/mon.c
+++ b/drivers/net/wireless/microchip/wilc1000/mon.c
@@ -235,11 +235,10 @@ struct net_device *wilc_wfi_init_mon_interface(struct wilc *wl,

if (register_netdevice(wl->monitor_dev)) {
netdev_err(real_dev, "register_netdevice failed\n");
+ free_netdev(wl->monitor_dev);
return NULL;
}
priv = netdev_priv(wl->monitor_dev);
- if (!priv)
- return NULL;

priv->real_ndev = real_dev;

--
2.25.1