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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>, Jakub Kicinski <kubakici@wp.pl>,
	netdev@vger.kernel.org, linux-wireless@vger.kernel.org,
	linux-mediatek@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	Lorenzo Bianconi <lorenzo@kernel.org>,
	Kalle Valo <kvalo@codeaurora.org>
Subject: [PATCH AUTOSEL 5.4 008/205] mt7601u: fix bbp version check in mt7601u_wait_bbp_ready
Date: Thu, 16 Jan 2020 11:39:43 -0500
Message-ID: <20200116164300.6705-8-sashal@kernel.org> (raw)
In-Reply-To: <20200116164300.6705-1-sashal@kernel.org>

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 <kubakici@wp.pl>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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 06f5702ab4bd..d863ab4a66c9 100644
--- a/drivers/net/wireless/mediatek/mt7601u/phy.c
+++ b/drivers/net/wireless/mediatek/mt7601u/phy.c
@@ -213,7 +213,7 @@ 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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Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200116164300.6705-1-sashal@kernel.org>
2020-01-16 16:39 ` Sasha Levin [this message]
2020-01-16 16:40 ` [PATCH AUTOSEL 5.4 044/205] memory: mtk-smi: Add PM suspend and resume ops Sasha Levin
2020-01-16 16:41 ` [PATCH AUTOSEL 5.4 127/205] iommu/mediatek: Correct the flush_iotlb_all callback Sasha Levin
2020-01-16 16:41 ` [PATCH AUTOSEL 5.4 128/205] iommu/mediatek: Add a new tlb_lock for tlb_flush Sasha Levin
2020-01-16 16:42 ` [PATCH AUTOSEL 5.4 159/205] mt76: mt76u: rely on usb_interface instead of usb_dev Sasha Levin

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