linux-kernel - [PATCH 4.19 029/639] PCI: iproc: Remove PAXC slot check to allow VF support

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Date:   Fri, 24 Jan 2020 10:23:19 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Jitendra Bhivare <jitendra.bhivare@...adcom.com>,
        Ray Jui <ray.jui@...adcom.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Andy Gospodarek <gospo@...adcom.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 029/639] PCI: iproc: Remove PAXC slot check to allow VF support

From: Jitendra Bhivare <jitendra.bhivare@...adcom.com>

[ Upstream commit 4da6b4480766e5bc9c4d7bc14bf1d0939a1a5fa7 ]

Fix previous incorrect logic that limits PAXC slot number to zero only.
In order for SRIOV/VF to work, we need to allow the slot number to be
greater than zero.

Fixes: 46560388c476c ("PCI: iproc: Allow multiple devices except on PAXC")
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@...adcom.com>
Signed-off-by: Ray Jui <ray.jui@...adcom.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Reviewed-by: Andy Gospodarek <gospo@...adcom.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pci/controller/pcie-iproc.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/pci/controller/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c
index 3160e9342a2fb..c20fd6bd68fd8 100644
--- a/drivers/pci/controller/pcie-iproc.c
+++ b/drivers/pci/controller/pcie-iproc.c
@@ -630,14 +630,6 @@ static void __iomem *iproc_pcie_map_cfg_bus(struct iproc_pcie *pcie,
 			return (pcie->base + offset);
 	}
 
-	/*
-	 * PAXC is connected to an internally emulated EP within the SoC.  It
-	 * allows only one device.
-	 */
-	if (pcie->ep_is_internal)
-		if (slot > 0)
-			return NULL;
-
 	return iproc_pcie_map_ep_cfg_reg(pcie, busno, slot, fn, where);
 }
 
-- 
2.20.1