staging: mt7621-pci: use {readl|writel}_relaxed instead of readl/writel

The driver does not perform DMA, so it's safe to use the relaxed version
for both readl and writel operations.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20210607120153.24989-4-sergio.paracuellos@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/mt7621-pci/pci-mt7621.c b/drivers/staging/mt7621-pci/pci-mt7621.c
index b83c338a2e3da0f55438a0d130c339c96b6b3c0a..8d14d0f9f7699fd786f41005926098330e9b91bf 100644 (file)
--- a/drivers/staging/mt7621-pci/pci-mt7621.c
+++ b/drivers/staging/mt7621-pci/pci-mt7621.c
@@ -109,32 +109,32 @@ struct mt7621_pcie {
 
 static inline u32 pcie_read(struct mt7621_pcie *pcie, u32 reg)
 {
-       return readl(pcie->base + reg);
+       return readl_relaxed(pcie->base + reg);
 }
 
 static inline void pcie_write(struct mt7621_pcie *pcie, u32 val, u32 reg)
 {
-       writel(val, pcie->base + reg);
+       writel_relaxed(val, pcie->base + reg);
 }
 
 static inline void pcie_rmw(struct mt7621_pcie *pcie, u32 reg, u32 clr, u32 set)
 {
-       u32 val = readl(pcie->base + reg);
+       u32 val = readl_relaxed(pcie->base + reg);
 
        val &= ~clr;
        val |= set;
-       writel(val, pcie->base + reg);
+       writel_relaxed(val, pcie->base + reg);
 }
 
 static inline u32 pcie_port_read(struct mt7621_pcie_port *port, u32 reg)
 {
-       return readl(port->base + reg);
+       return readl_relaxed(port->base + reg);
 }
 
 static inline void pcie_port_write(struct mt7621_pcie_port *port,
                                   u32 val, u32 reg)
 {
-       writel(val, port->base + reg);
+       writel_relaxed(val, port->base + reg);
 }
 
 static inline u32 mt7621_pci_get_cfgaddr(unsigned int bus, unsigned int slot,
@@ -151,7 +151,7 @@ static void __iomem *mt7621_pcie_map_bus(struct pci_bus *bus,
        u32 address = mt7621_pci_get_cfgaddr(bus->number, PCI_SLOT(devfn),
                                             PCI_FUNC(devfn), where);
 
-       writel(address, pcie->base + RALINK_PCI_CONFIG_ADDR);
+       writel_relaxed(address, pcie->base + RALINK_PCI_CONFIG_ADDR);
 
        return pcie->base + RALINK_PCI_CONFIG_DATA + (where & 3);
 }