Commit 860bce45 authored by Sergio Paracuellos's avatar Sergio Paracuellos Committed by Greg Kroah-Hartman
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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: default avatarSergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20210607120153.24989-4-sergio.paracuellos@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent aa6c32f9

drivers/staging/mt7621-pci/pci-mt7621.c

+7 −7
Original line number Diff line number Diff line
@@ -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);

}