Commit 7d05652c authored by Chandra S Gorentla's avatar Chandra S Gorentla Committed by Greg Kroah-Hartman
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drivers: staging: wilc1000: Add check for SPI availability 



NULL pointer deference is observed in the wilc1000.ko module
with bus type SPI and when SPI is not ready.

Signed-off-by: default avatarChandra S Gorentla <csgorentla@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8fec2ee4

drivers/staging/wilc1000/linux_wlan.c

+6 −0
Original line number Diff line number Diff line
@@ -1634,6 +1634,12 @@ int mac_open(struct net_device *ndev) 
	int i = 0;

	struct WILC_WFI_priv *priv;



#ifdef WILC_SPI

	if (!g_linux_wlan || !g_linux_wlan->wilc_spidev) {

		netdev_err(ndev, "wilc1000: SPI device not ready\n");

		return -ENODEV;

	}

#endif

	nic = netdev_priv(ndev);

	priv = wiphy_priv(nic->wilc_netdev->ieee80211_ptr->wiphy);

	PRINT_D(INIT_DBG, "MAC OPEN[%p]\n", ndev);