linux-kernel - [PATCH] bcma: fix incorrect update of BCMA_CORE_PCI_MDIO

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Message-Id: <20190822133524.6274-1-colin.king@canonical.com>
Date:   Thu, 22 Aug 2019 14:35:24 +0100
From:   Colin King <colin.king@...onical.com>
To:     Hauke Mehrtens <hauke@...ke-m.de>,
        Rafał Miłecki <zajec5@...il.com>,
        linux-wireless@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] bcma: fix incorrect update of BCMA_CORE_PCI_MDIO_DATA

From: Colin Ian King <colin.king@...onical.com>

An earlier commit re-worked the setting of the bitmask and is now
assigning v with some bit flags rather than bitwise or-ing them
into v, consequently the earlier bit-settings of v are being lost.
Fix this by replacing an assignment with the bitwise or instead.

Addresses-Coverity: ("Unused value")
Fixes: 2be25cac8402 ("bcma: add constants for PCI and use them")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/bcma/driver_pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bcma/driver_pci.c b/drivers/bcma/driver_pci.c
index f499a469e66d..d219ee947c07 100644
--- a/drivers/bcma/driver_pci.c
+++ b/drivers/bcma/driver_pci.c
@@ -78,7 +78,7 @@ static u16 bcma_pcie_mdio_read(struct bcma_drv_pci *pc, u16 device, u8 address)
 		v |= (address << BCMA_CORE_PCI_MDIODATA_REGADDR_SHF_OLD);
 	}
 
-	v = BCMA_CORE_PCI_MDIODATA_START;
+	v |= BCMA_CORE_PCI_MDIODATA_START;
 	v |= BCMA_CORE_PCI_MDIODATA_READ;
 	v |= BCMA_CORE_PCI_MDIODATA_TA;
 
-- 
2.20.1