From: Tom Rix trix@redhat.com
[ Upstream commit 8ce437dd5b2e4adef13aa4ecce07392f9966b1ab ]
Clang static analysis reports this representative issue dbg.c:1455:6: warning: Branch condition evaluates to a garbage value if (!rxf_data.size) ^~~~~~~~~~~~~~
This check depends on iwl_ini_get_rxf_data() to clear rxf_data but the function can return early without doing the clear. So move the memset before the early return.
Fixes: cc9b6012d34b ("iwlwifi: yoyo: use hweight_long instead of bit manipulating") Signed-off-by: Tom Rix trix@redhat.com Signed-off-by: Gregory Greenman gregory.greenman@intel.com Link: https://lore.kernel.org/r/20230414130637.872a7175f1ff.I33802a77a91998276992b... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c index 69616a2868bb8..c69f3fb833327 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c @@ -1362,13 +1362,13 @@ static void iwl_ini_get_rxf_data(struct iwl_fw_runtime *fwrt, if (!data) return;
+ memset(data, 0, sizeof(*data)); + /* make sure only one bit is set in only one fid */ if (WARN_ONCE(hweight_long(fid1) + hweight_long(fid2) != 1, "fid1=%x, fid2=%x\n", fid1, fid2)) return;
- memset(data, 0, sizeof(*data)); - if (fid1) { fifo_idx = ffs(fid1) - 1; if (WARN_ONCE(fifo_idx >= MAX_NUM_LMAC, "fifo_idx=%d\n",