linux-kernel - [PATCH v8 12/18] PCI: cadence: Configure LM_EP_FUNC_CFG based on epc->function_num

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 11 Nov 2020 21:05:53 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Jonathan Corbet <corbet@....net>,
        Kishon Vijay Abraham I <kishon@...com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Arnd Bergmann <arnd@...db.de>, Jon Mason <jdmason@...zu.us>,
        Dave Jiang <dave.jiang@...el.com>,
        Allen Hubbe <allenbh@...il.com>,
        Tom Joseph <tjoseph@...ence.com>, Rob Herring <robh@...nel.org>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-pci@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-ntb@...glegroups.com>
Subject: [PATCH v8 12/18] PCI: cadence: Configure LM_EP_FUNC_CFG based on epc->function_num_map

The number of functions supported by the endpoint controller is
configured in LM_EP_FUNC_CFG based on func_no member of struct pci_epf.
Now that an endpoint function can be associated with two endpoint
controllers (primary and secondary), just using func_no will
not suffice as that will take into account only if the endpoint
controller is associated with the primary interface of endpoint
function. Instead use epc->function_num_map which will already have the
configured functions information (irrespective of whether the endpoint
controller is associated with primary or secondary interface).

Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
 drivers/pci/controller/cadence/pcie-cadence-ep.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/pci/controller/cadence/pcie-cadence-ep.c b/drivers/pci/controller/cadence/pcie-cadence-ep.c
index 1fe6b8baca97..4e4eb30cd1a2 100644
--- a/drivers/pci/controller/cadence/pcie-cadence-ep.c
+++ b/drivers/pci/controller/cadence/pcie-cadence-ep.c
@@ -506,18 +506,13 @@ static int cdns_pcie_ep_start(struct pci_epc *epc)
 	struct cdns_pcie_ep *ep = epc_get_drvdata(epc);
 	struct cdns_pcie *pcie = &ep->pcie;
 	struct device *dev = pcie->dev;
-	struct pci_epf *epf;
-	u32 cfg;
 	int ret;
 
 	/*
 	 * BIT(0) is hardwired to 1, hence function 0 is always enabled
 	 * and can't be disabled anyway.
 	 */
-	cfg = BIT(0);
-	list_for_each_entry(epf, &epc->pci_epf, list)
-		cfg |= BIT(epf->func_no);
-	cdns_pcie_writel(pcie, CDNS_PCIE_LM_EP_FUNC_CFG, cfg);
+	cdns_pcie_writel(pcie, CDNS_PCIE_LM_EP_FUNC_CFG, epc->function_num_map);
 
 	ret = cdns_pcie_start_link(pcie);
 	if (ret) {
-- 
2.17.1