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authorGabor Juhos <juhosg@openwrt.org>2012-12-11 00:06:41 +0100
committerJohn W. Linville <linville@tuxdriver.com>2012-12-11 16:00:39 -0500
commit36b07d15a656b657beaf9e6357a341768192fad2 (patch)
tree86ced1f36f85b684186c9f1ef78eb4cf11eef0cd /drivers/net
parente576defd1fe1ade5afe590eadd556dce5473fc26 (diff)
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 <dan.carpenter@oracle.com> Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/wireless/ath/ath9k/init.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 27703a5e48d6..f69ef5d48c7b 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;