[PATCH AUTOSEL 4.9 224/251] mt7601u: fix bbp version check in mt7601u_wait_bbp_ready
From: Sasha Levin <sashal@kernel.org>
Date: 2020-01-16 17:42:00
Also in:
linux-mediatek, linux-wireless, lkml, netdev, stable
Subsystem:
mediatek mt7601u wireless lan driver, the rest · Maintainers:
Jakub Kicinski, Linus Torvalds
From: Lorenzo Bianconi <lorenzo@kernel.org>
[ Upstream commit 15e14f76f85f4f0eab3b8146e1cd3c58ce272823 ]
Fix bbp ready check in mt7601u_wait_bbp_ready. The issue is reported by
coverity with the following error:
Logical vs. bitwise operator
The expression's value does not depend on the operands; inadvertent use
of the wrong operator is a likely logic error.
Addresses-Coverity-ID: 1309441 ("Logical vs. bitwise operator")
Fixes: c869f77d6abb ("add mt7601u driver")
Acked-by: Jakub Kicinski <redacted>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Kalle Valo <redacted>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/mediatek/mt7601u/phy.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt7601u/phy.c b/drivers/net/wireless/mediatek/mt7601u/phy.c
index ca09a5d4305e..71a47459bf8a 100644
--- a/drivers/net/wireless/mediatek/mt7601u/phy.c
+++ b/drivers/net/wireless/mediatek/mt7601u/phy.c@@ -221,7 +221,7 @@ int mt7601u_wait_bbp_ready(struct mt7601u_dev *dev) do { val = mt7601u_bbp_rr(dev, MT_BBP_REG_VERSION); - if (val && ~val) + if (val && val != 0xff) break; } while (--i);
--
2.20.1
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