linux-kernel - [PATCH v4 01/14] PCI: dwc: Fix erroneous version type test helper

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Date:   Fri, 14 Apr 2023 05:18:19 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Cai Huoqing <cai.huoqing@...ux.dev>,
        Jingoo Han <jingoohan1@...il.com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Vinod Koul <vkoul@...nel.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Rob Herring <robh@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Serge Semin <fancer.lancer@...il.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>
CC:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        <linux-pci@...r.kernel.org>, <dmaengine@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v4 01/14] PCI: dwc: Fix erroneous version type test helper

Due to an unfortunate mistake the macro function actually checks the
IP-core version instead of the IP-core version type which isn't what
originally implied. Fix it by introducing a new helper
__dw_pcie_ver_type_cmp() with the same semantic as the __dw_pcie_ver_cmp()
counterpart except it refers to the dw_pcie.type field in order to perform
the passed comparison operation.

Fixes: 0b0a780d52ad ("PCI: dwc: Add macros to compare Synopsys IP core versions")
Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 drivers/pci/controller/dwc/pcie-designware.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 79713ce075cc..adad0ea61799 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -37,17 +37,20 @@
 #define __dw_pcie_ver_cmp(_pci, _ver, _op) \
 	((_pci)->version _op DW_PCIE_VER_ ## _ver)
 
+#define __dw_pcie_ver_type_cmp(_pci, _type, _op) \
+	((_pci)->type _op DW_PCIE_VER_TYPE_ ## _type)
+
 #define dw_pcie_ver_is(_pci, _ver) __dw_pcie_ver_cmp(_pci, _ver, ==)
 
 #define dw_pcie_ver_is_ge(_pci, _ver) __dw_pcie_ver_cmp(_pci, _ver, >=)
 
 #define dw_pcie_ver_type_is(_pci, _ver, _type) \
 	(__dw_pcie_ver_cmp(_pci, _ver, ==) && \
-	 __dw_pcie_ver_cmp(_pci, TYPE_ ## _type, ==))
+	 __dw_pcie_ver_type_cmp(_pci, _type, ==))
 
 #define dw_pcie_ver_type_is_ge(_pci, _ver, _type) \
 	(__dw_pcie_ver_cmp(_pci, _ver, ==) && \
-	 __dw_pcie_ver_cmp(_pci, TYPE_ ## _type, >=))
+	 __dw_pcie_ver_type_cmp(_pci, _type, >=))
 
 /* DWC PCIe controller capabilities */
 #define DW_PCIE_CAP_REQ_RES		0
-- 
2.40.0