2021-09-10 16:09:30

by Jérôme Pouiller

[permalink] [raw]
Subject: [PATCH 12/31] staging: wfx: simplify API coherency check

From: Jérôme Pouiller <[email protected]>

The 'channel' argument of hif_join() should never be NULL. hif_join()
does not have the responsibility to recover bug of caller. A call to
WARN() at the beginning of the function reminds this constraint to the

In current code, if the argument channel is NULL, memory leaks. The new
code just emit a warning and does not give the illusion that it is
supported (and indeed a Oops will probably raise a few lines below).

Signed-off-by: Jérôme Pouiller <[email protected]>
drivers/staging/wfx/hif_tx.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/wfx/hif_tx.c b/drivers/staging/wfx/hif_tx.c
index 14b7e047916e..6ffbae32028b 100644
--- a/drivers/staging/wfx/hif_tx.c
+++ b/drivers/staging/wfx/hif_tx.c
@@ -299,10 +299,9 @@ int hif_join(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf,

+ WARN_ON(!channel);
WARN_ON(sizeof(body->ssid) < ssidlen);
WARN(!conf->ibss_joined && !ssidlen, "joining an unknown BSS");
- if (WARN_ON(!channel))
- return -EINVAL;
if (!hif)
return -ENOMEM;
body->infrastructure_bss_mode = !conf->ibss_joined;