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[5.7,141/477] staging: wfx: fix overflow in frame counters

Message ID 20200623195414.272118318@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH June 23, 2020, 7:52 p.m. UTC 
From: Jérôme Pouiller <jerome.pouiller@silabs.com>

[ Upstream commit 87066173e34b0ca5d041d5519e6bb030b1958184 ]

It has been reported that trying to send small packets of data could
produce a "inconsistent notification" warning.

It seems that in some circumstances, the number of frame queued in the
driver could greatly increase and exceed UCHAR_MAX. So the field
"buffered" from struct sta_priv can overflow.

Just increase the size of "bueffered" to fix the problem.

Fixes: 7d2d2bfdeb82 ("staging: wfx: relocate "buffered" information to sta_priv")
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200427134031.323403-10-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/staging/wfx/sta.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/staging/wfx/sta.h b/drivers/staging/wfx/sta.h
index cf99a8a74a81b..ace845f9ed140 100644
--- a/drivers/staging/wfx/sta.h
+++ b/drivers/staging/wfx/sta.h
@@ -37,7 +37,7 @@  struct wfx_grp_addr_table {
 struct wfx_sta_priv {
 	int link_id;
 	int vif_id;
-	u8 buffered[IEEE80211_NUM_TIDS];
+	int buffered[IEEE80211_NUM_TIDS];
 	// Ensure atomicity of "buffered" and calls to ieee80211_sta_set_buffered()
 	spinlock_t lock;
 };