diff options
| author | Raja Mani <rmani@qca.qualcomm.com> | 2012-09-21 15:08:53 +0530 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2012-10-24 11:49:50 +0300 |
| commit | 43a06b346d1350009c8f7eaa1a2a137395874ca0 (patch) | |
| tree | 07e917a46e113a7ed30dd4f7d9f239b364d0d113 /drivers/net/wireless | |
| parent | 58109df67aa073756eb5a2dc2ae068bc1bbcc125 (diff) | |
ath6kl: Avoid null ptr dereference while printing reg domain pair
Return value of ath6kl_get_regpair() is stored in 'regpair' in
ath6kl_wmi_regdomain_event() func and it's directly accessed
in the debug prints without checking for NULL value. There are
situation to get NULL pointer as a return value from
ath6kl_get_regpair() func. Fix this.
Found this on code review.
Signed-off-by: Raja Mani <rmani@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/ath/ath6kl/wmi.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c b/drivers/net/wireless/ath/ath6kl/wmi.c index 68b46bda498..64b81fd554b 100644 --- a/drivers/net/wireless/ath/ath6kl/wmi.c +++ b/drivers/net/wireless/ath/ath6kl/wmi.c @@ -936,8 +936,12 @@ static void ath6kl_wmi_regdomain_event(struct wmi *wmi, u8 *datap, int len) regpair = ath6kl_get_regpair((u16) reg_code); country = ath6kl_regd_find_country_by_rd((u16) reg_code); - ath6kl_dbg(ATH6KL_DBG_WMI, "Regpair used: 0x%0x\n", - regpair->regDmnEnum); + if (regpair) + ath6kl_dbg(ATH6KL_DBG_WMI, "Regpair used: 0x%0x\n", + regpair->regDmnEnum); + else + ath6kl_warn("Regpair not found reg_code 0x%0x\n", + reg_code); } if (country && wmi->parent_dev->wiphy_registered) { |