[PATCH] ARM: ixp4xx: fix building both pci drivers
Arnd Bergmann
arnd at kernel.org
Wed Jul 21 08:15:22 PDT 2021
From: Arnd Bergmann <arnd at arndb.de>
When both the old and the new PCI drivers are enabled
in the same kernel, there are a couple of namespace
conflicts that cause a build failure:
drivers/pci/controller/pci-ixp4xx.c:38: error: "IXP4XX_PCI_CSR" redefined [-Werror]
38 | #define IXP4XX_PCI_CSR 0x1c
|
In file included from arch/arm/mach-ixp4xx/include/mach/hardware.h:23,
from arch/arm/mach-ixp4xx/include/mach/io.h:15,
from arch/arm/include/asm/io.h:198,
from include/linux/io.h:13,
from drivers/pci/controller/pci-ixp4xx.c:20:
arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h:221: note: this is the location of the previous definition
221 | #define IXP4XX_PCI_CSR(x) ((volatile u32 *)(IXP4XX_PCI_CFG_BASE_VIRT+(x)))
|
drivers/pci/controller/pci-ixp4xx.c:148:12: error: 'ixp4xx_pci_read' redeclared as different kind of symbol
148 | static int ixp4xx_pci_read(struct ixp4xx_pci *p, u32 addr, u32 cmd, u32 *data)
| ^~~~~~~~~~~~~~~
Rename both the ixp4xx_pci_read/ixp4xx_pci_write functions and the
IXP4XX_PCI_CSR macro. In each case, I went with the version that
has fewer callers to keep the change small.
Fixes: f7821b493458 ("PCI: ixp4xx: Add a new driver for IXP4xx")
Cc: soc at kernel.org
Signed-off-by: Arnd Bergmann <arnd at arndb.de>
---
.../mach-ixp4xx/include/mach/ixp4xx-regs.h | 48 +++++++++----------
drivers/pci/controller/pci-ixp4xx.c | 8 ++--
2 files changed, 28 insertions(+), 28 deletions(-)
diff --git a/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h b/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
index abb07f105515..74e63d4531aa 100644
--- a/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
+++ b/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
@@ -218,30 +218,30 @@
/*
* PCI Control/Status Registers
*/
-#define IXP4XX_PCI_CSR(x) ((volatile u32 *)(IXP4XX_PCI_CFG_BASE_VIRT+(x)))
-
-#define PCI_NP_AD IXP4XX_PCI_CSR(PCI_NP_AD_OFFSET)
-#define PCI_NP_CBE IXP4XX_PCI_CSR(PCI_NP_CBE_OFFSET)
-#define PCI_NP_WDATA IXP4XX_PCI_CSR(PCI_NP_WDATA_OFFSET)
-#define PCI_NP_RDATA IXP4XX_PCI_CSR(PCI_NP_RDATA_OFFSET)
-#define PCI_CRP_AD_CBE IXP4XX_PCI_CSR(PCI_CRP_AD_CBE_OFFSET)
-#define PCI_CRP_WDATA IXP4XX_PCI_CSR(PCI_CRP_WDATA_OFFSET)
-#define PCI_CRP_RDATA IXP4XX_PCI_CSR(PCI_CRP_RDATA_OFFSET)
-#define PCI_CSR IXP4XX_PCI_CSR(PCI_CSR_OFFSET)
-#define PCI_ISR IXP4XX_PCI_CSR(PCI_ISR_OFFSET)
-#define PCI_INTEN IXP4XX_PCI_CSR(PCI_INTEN_OFFSET)
-#define PCI_DMACTRL IXP4XX_PCI_CSR(PCI_DMACTRL_OFFSET)
-#define PCI_AHBMEMBASE IXP4XX_PCI_CSR(PCI_AHBMEMBASE_OFFSET)
-#define PCI_AHBIOBASE IXP4XX_PCI_CSR(PCI_AHBIOBASE_OFFSET)
-#define PCI_PCIMEMBASE IXP4XX_PCI_CSR(PCI_PCIMEMBASE_OFFSET)
-#define PCI_AHBDOORBELL IXP4XX_PCI_CSR(PCI_AHBDOORBELL_OFFSET)
-#define PCI_PCIDOORBELL IXP4XX_PCI_CSR(PCI_PCIDOORBELL_OFFSET)
-#define PCI_ATPDMA0_AHBADDR IXP4XX_PCI_CSR(PCI_ATPDMA0_AHBADDR_OFFSET)
-#define PCI_ATPDMA0_PCIADDR IXP4XX_PCI_CSR(PCI_ATPDMA0_PCIADDR_OFFSET)
-#define PCI_ATPDMA0_LENADDR IXP4XX_PCI_CSR(PCI_ATPDMA0_LENADDR_OFFSET)
-#define PCI_ATPDMA1_AHBADDR IXP4XX_PCI_CSR(PCI_ATPDMA1_AHBADDR_OFFSET)
-#define PCI_ATPDMA1_PCIADDR IXP4XX_PCI_CSR(PCI_ATPDMA1_PCIADDR_OFFSET)
-#define PCI_ATPDMA1_LENADDR IXP4XX_PCI_CSR(PCI_ATPDMA1_LENADDR_OFFSET)
+#define _IXP4XX_PCI_CSR(x) ((volatile u32 *)(IXP4XX_PCI_CFG_BASE_VIRT+(x)))
+
+#define PCI_NP_AD _IXP4XX_PCI_CSR(PCI_NP_AD_OFFSET)
+#define PCI_NP_CBE _IXP4XX_PCI_CSR(PCI_NP_CBE_OFFSET)
+#define PCI_NP_WDATA _IXP4XX_PCI_CSR(PCI_NP_WDATA_OFFSET)
+#define PCI_NP_RDATA _IXP4XX_PCI_CSR(PCI_NP_RDATA_OFFSET)
+#define PCI_CRP_AD_CBE _IXP4XX_PCI_CSR(PCI_CRP_AD_CBE_OFFSET)
+#define PCI_CRP_WDATA _IXP4XX_PCI_CSR(PCI_CRP_WDATA_OFFSET)
+#define PCI_CRP_RDATA _IXP4XX_PCI_CSR(PCI_CRP_RDATA_OFFSET)
+#define PCI_CSR _IXP4XX_PCI_CSR(PCI_CSR_OFFSET)
+#define PCI_ISR _IXP4XX_PCI_CSR(PCI_ISR_OFFSET)
+#define PCI_INTEN _IXP4XX_PCI_CSR(PCI_INTEN_OFFSET)
+#define PCI_DMACTRL _IXP4XX_PCI_CSR(PCI_DMACTRL_OFFSET)
+#define PCI_AHBMEMBASE _IXP4XX_PCI_CSR(PCI_AHBMEMBASE_OFFSET)
+#define PCI_AHBIOBASE _IXP4XX_PCI_CSR(PCI_AHBIOBASE_OFFSET)
+#define PCI_PCIMEMBASE _IXP4XX_PCI_CSR(PCI_PCIMEMBASE_OFFSET)
+#define PCI_AHBDOORBELL _IXP4XX_PCI_CSR(PCI_AHBDOORBELL_OFFSET)
+#define PCI_PCIDOORBELL _IXP4XX_PCI_CSR(PCI_PCIDOORBELL_OFFSET)
+#define PCI_ATPDMA0_AHBADDR _IXP4XX_PCI_CSR(PCI_ATPDMA0_AHBADDR_OFFSET)
+#define PCI_ATPDMA0_PCIADDR _IXP4XX_PCI_CSR(PCI_ATPDMA0_PCIADDR_OFFSET)
+#define PCI_ATPDMA0_LENADDR _IXP4XX_PCI_CSR(PCI_ATPDMA0_LENADDR_OFFSET)
+#define PCI_ATPDMA1_AHBADDR _IXP4XX_PCI_CSR(PCI_ATPDMA1_AHBADDR_OFFSET)
+#define PCI_ATPDMA1_PCIADDR _IXP4XX_PCI_CSR(PCI_ATPDMA1_PCIADDR_OFFSET)
+#define PCI_ATPDMA1_LENADDR _IXP4XX_PCI_CSR(PCI_ATPDMA1_LENADDR_OFFSET)
/*
* PCI register values and bit definitions
diff --git a/drivers/pci/controller/pci-ixp4xx.c b/drivers/pci/controller/pci-ixp4xx.c
index 896a45b24236..654ac4a82beb 100644
--- a/drivers/pci/controller/pci-ixp4xx.c
+++ b/drivers/pci/controller/pci-ixp4xx.c
@@ -145,7 +145,7 @@ static int ixp4xx_pci_check_master_abort(struct ixp4xx_pci *p)
return 0;
}
-static int ixp4xx_pci_read(struct ixp4xx_pci *p, u32 addr, u32 cmd, u32 *data)
+static int ixp4xx_pci_read_indirect(struct ixp4xx_pci *p, u32 addr, u32 cmd, u32 *data)
{
ixp4xx_writel(p, IXP4XX_PCI_NP_AD, addr);
@@ -170,7 +170,7 @@ static int ixp4xx_pci_read(struct ixp4xx_pci *p, u32 addr, u32 cmd, u32 *data)
return ixp4xx_pci_check_master_abort(p);
}
-static int ixp4xx_pci_write(struct ixp4xx_pci *p, u32 addr, u32 cmd, u32 data)
+static int ixp4xx_pci_write_indirect(struct ixp4xx_pci *p, u32 addr, u32 cmd, u32 data)
{
ixp4xx_writel(p, IXP4XX_PCI_NP_AD, addr);
@@ -308,7 +308,7 @@ static int ixp4xx_pci_read_config(struct pci_bus *bus, unsigned int devfn,
dev_dbg(p->dev, "read_config from %d size %d dev %d:%d:%d address: %08x cmd: %08x\n",
where, size, bus_num, PCI_SLOT(devfn), PCI_FUNC(devfn), addr, cmd);
- ret = ixp4xx_pci_read(p, addr, cmd, &val);
+ ret = ixp4xx_pci_read_indirect(p, addr, cmd, &val);
if (ret)
return PCIBIOS_DEVICE_NOT_FOUND;
@@ -356,7 +356,7 @@ static int ixp4xx_pci_write_config(struct pci_bus *bus, unsigned int devfn,
dev_dbg(p->dev, "write_config_byte %#x to %d size %d dev %d:%d:%d addr: %08x cmd %08x\n",
value, where, size, bus_num, PCI_SLOT(devfn), PCI_FUNC(devfn), addr, cmd);
- ret = ixp4xx_pci_write(p, addr, cmd, val);
+ ret = ixp4xx_pci_write_indirect(p, addr, cmd, val);
if (ret)
return PCIBIOS_DEVICE_NOT_FOUND;
--
2.29.2
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