[PATCH] wcn36xx: Initialize channel to NULL inside wcn36xx_change_opchannel()

Souptick Joarder
2022-02-19T15:29:23Z

From: "Souptick Joarder (HPE)" <jrdr.linux@gmail.com>

Kernel test robot reported below warning ->
drivers/net/wireless/ath/wcn36xx/main.c:409:7: warning: Branch
condition evaluates to a garbage value
[clang-analyzer-core.uninitialized.Branch]

Also code walk indicates, if channel is not found in first band,
it will break the loop and instead of exit it will go ahead and
assign a garbage value in wcn->channel which looks like a bug.

Initialize channel with NULL should avoid this issue.

Fixes: d6f2746691cb ("wcn36xx: Track the band and channel we are tuned to")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Souptick Joarder (HPE) <jrdr.linux@gmail.com>
---
drivers/net/wireless/ath/wcn36xx/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
index 75661d449712..1a06eff07107 100644
--- a/drivers/net/wireless/ath/wcn36xx/main.c
+++ b/drivers/net/wireless/ath/wcn36xx/main.c
@@ -394,7 +394,7 @@ static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch)
struct ieee80211_vif *vif = NULL;
struct wcn36xx_vif *tmp;
struct ieee80211_supported_band *band;
- struct ieee80211_channel *channel;
+ struct ieee80211_channel *channel = NULL;
unsigned long flags;
int i, j;

--
2.25.1