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authorJiaxun Yang <jiaxun.yang@flygoat.com>2025-01-14 18:11:58 +0000
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2025-01-20 20:39:23 +0100
commitdf1b8d6e89db0edd572a1e375f5d3dd5575b9a9b (patch)
tree5c672a25e5dfbb27c5f7e7df377a74a67a190fbb
parenta3c4afc0e081f8b6b5a744afb3f69c88288d218e (diff)
MIPS: pci-legacy: Override pci_address_to_pio
pci-legacy systems are not using logic_pio to managed PIO allocations, thus the generic pci_address_to_pio won't work when PCI_IOBASE is defined. Override the function to use architecture implementation to fix the problem. Cc: stable@vger.kernel.org Fixes: 4bfb53e7d317 ("mips: add <asm-generic/io.h> including") Reported-by: Mateusz Jończyk <mat.jonczyk@o2.pl> Closes: https://lore.kernel.org/r/99f75c66-4c2d-45dc-a808-b5ba440c7551@app.fastmail.com/ Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
-rw-r--r--arch/mips/pci/pci-legacy.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/mips/pci/pci-legacy.c b/arch/mips/pci/pci-legacy.c
index ec2567f8efd8..66898fd182dc 100644
--- a/arch/mips/pci/pci-legacy.c
+++ b/arch/mips/pci/pci-legacy.c
@@ -29,6 +29,14 @@ static LIST_HEAD(controllers);
static int pci_initialized;
+unsigned long pci_address_to_pio(phys_addr_t address)
+{
+ if (address > IO_SPACE_LIMIT)
+ return (unsigned long)-1;
+
+ return (unsigned long) address;
+}
+
/*
* We need to avoid collisions with `mirrored' VGA ports
* and other strange ISA hardware, so we always want the