[PATCH AUTOSEL 4.19 520/671] bcma: fix incorrect update of BCMA_CORE_PCI_MDIO_DATA

[Sasha Levin <sashal@kernel.org>]

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

[ Upstream commit 420c20be08a4597404d272ae9793b642401146eb ]

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@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/bcma/driver_pci.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/bcma/driver_pci.c b/drivers/bcma/driver_pci.c
index f499a469e66d..12b2cc9a3fbe 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;
 
@@ -121,7 +121,7 @@ static void bcma_pcie_mdio_write(struct bcma_drv_pci *pc, u16 device,
 		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_WRITE;
 	v |= BCMA_CORE_PCI_MDIODATA_TA;
 	v |= data;
-- 
2.20.1