From 36b07d15a656b657beaf9e6357a341768192fad2 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Tue, 11 Dec 2012 00:06:41 +0100 Subject: [PATCH] ath9k: check pdata variable before dereferencing it Due to my recent commit (ath9k: allow to load EEPROM content via firmware API) smatch complains about that the 'pdata' variable in 'ath9k_hw_init' can be NULL and it is dereferenced before checking that. That is absolutely correct. Check the 'pdata' variable before using it to avoid a NULL pointer dereference. Reported-by: Dan Carpenter Signed-off-by: Gabor Juhos Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index 27703a5..f69ef5d 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -633,7 +633,7 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, ath_read_cachesize(common, &csz); common->cachelsz = csz << 2; /* convert to bytes */ - if (pdata->eeprom_name) { + if (pdata && pdata->eeprom_name) { ret = ath9k_eeprom_request(sc, pdata->eeprom_name); if (ret) goto err_eeprom; -- 2.7.4